A chemist has 50 gallons of gasoline that contain 6% ethanol. How many gallons of gasoline containing11% ethanol should she add to get a mixture that is 10% ethanol?

Q: Mary Jo spends $1,350 to buy stock in two companies. She pays $12 a share to one of the companies…

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Q: The value of 110 coins, consisting of dimes and quarters, is $20.30. How many of each kind of coin…

A: Let there are x dimes and y quarters.  A dime= 10 cent= $0.10 A quarter=25 cent= $0.25 So the total…

Q: During a winter storm, only 67% of students attend classes. If there are 1,000 students in the…

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Q: Jan has 150 acres of farm land that she wants to plant with either corn or soybeans. If 100 bushels…

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Q: Adrian works in New York City and makes $42 per hour. She works in an office and must get her suit…

A: Let she has to work at least x hours In 1 hour she earns $42 In x hours she earns $42x    And her…

Q: The football team has an orange water jug and a blue water jug. The orange container is full with…

A: Given information: The football team has an orange water jug and a blue water jug. Volume of water…

Q: A scientist mixes water (containing no salt) with a solution that contains 45% salt. She wants to…

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Q: How many gallons of a 3% salt solution must be mixed with a 7% salt solution to obtain 100 gallons…

A: We will solve the following.

Q: Two friends have built a lemonade stand, and they plan to start out by selling 24 liters of lemonade…

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Q: How many gallons of a 4% salt solution must be mixed with 65 gallons of a 26% solution to obtain a…

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Q: A biologist has two brine solutions, one containing 5% salt and another containing 20% salt. How…

A: We can solve the problem by equating both side according to the given criteria.

Q: A chemist needs to mix a 75% saltwater solution with a 50%saltwater solution to obtain 10 gallons of…

A: One need to convert the given information in system of equations and then solve for the variables.

Q: Marissa has 150 acres of farm land that she wants plant with either radishes or carrots. If 100…

A: Given:  Marissa has 150 acres of farm land that she wants to plant with either radishes or…

Q: You have 6 liters of a pineapple juice blend that has 50% pure pineapple juice. How many liters of…

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Q: A mixture of 12% disinfectant solution is to be made from 10% and 20% disinfectant solutions. How…

A: Given:A mixture of 12% disinfectant solution is to be made from 10% and 20% disinfectant solutions.…

Q: How many gallons of 35% alcohol solution and 50% alcohol solution must be mixed to get 12 gallons of…

A: Here we will find the no of gallons of 35% alcohol solution and 50% of alcohol solution required to…

Q: A mixture of 4% disinfectant solution is to be made from 5% and 2% disinfectant solutions. How much…

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Q: How many gallons  of a 6% salt solution must be mixed with 10 gallons  of a 8% solution to obtain a…

A: Let x denote Gallon. So, gallons of a 6% salt solution are calculated as (x gal) (6%).

Q: A photographer is mixing 2 liters of a 10% acetic acid solution with a 5% solution to get a 7%…

A: We have to find the amount of 5%solution to be added.

Q: A woman made a deposit of ​$287 . If her deposit consisted of 83   ​bills, some of them…

A: topic- linear equation in two variables

Q: A grocer mixes two kinds of nuts that cost $3.88 per pound and $4.88 per pound, to make 100 pounds…

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Q: The field biologist was recording sightings of raccoons and deer in a neighborhood over the course…

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Q: If Julio has 14 quarters and nickels in his pocket, and they have a combined value of 230 cents, how…

A: Given, Julio has  14 quarters and nickels in his pocket.  combined value of quarters and nickels is…

Q: A chemist needs to mix a 36% salt solution with a 77% salt solution to make 40 liters of a 53% salt…

A: Consider the provided question, A chemist needs to mix a 36% salt solution with a 77% salt solution…

Q: How many gallons of a 80​% antifreeze solution must be mixed with 100 gallons of 15​% antifreeze to…

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Q: A theatre contains 492 seats and the ticket prices for a recent play were $57 for adults and $21 for…

A: Gievn that  Total number of seats in a theatre=492 Ticket price for adults=$57 Ticket price for…

Q: If Mr. Brown and his son together had 220 dollars, and Mr. Brown had 10times as much as his son, how…

A: Let son had $ x Mr. Brown had $ 10x Together they had $ 220

Q: Paul and Eric collected 270 phone cards altogether, Paul collected 4 times as many phone cards as…

A: We will solve the problem

Q: A chemist needs to mix a 12% acid solution with a 20% acid solution to obtain 160 ounces of a 15%…

A: Given: A chemist needs to mix a 12% acid solution with a 20% acid solution to obtain 160 ounces of a…

Q: An electronics store sells seven times as many printers as fax machines. If sales for the month…

A: Given: 1600 pieces were sold Let xbe the number of fax machine sold. Let 7x be the number of…

Q: How much of a 90% orange juice drink must be mixed with 12 gallons of a 40% orange juice drink to…

A: To be found : Amount of a 90% orange juice drink must be mixed with 12 gallons of a 40% orange juice…

Q: A restaurant sold 350 less hotdogs than hamburgers. Altogether, the restaurant sold 700 hotdogs and…

A: Let the number of hotdogs and hamburgers sold be x & y respectively

Q: Toby and Rocco have 30- toys between them. If Toby has 11 of the toys, how many toys does Rocco…

A: Given: Toby and Rocco have 305 toys between them. And Toby has 115 of the toys. To find: How many…

Q: The Aoki family just bought 7 crates of eggs, and each crate had 12 eggs. The family already had 9…

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Q: A chemical company makes two brands of antifreeze. The first brand is 60% pure antifreeze, and the…

A: Let x=Amount of 60% antifreeze And y=Amount of 85% antifreeze So according to given data we get…

Q: How many gallons of a 4% salt solution must be mixed with 75 gallons of a 6% solution to obtain a 5%…

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Q: A 40% solution of fertilizer is to be mixed with a 70% solution of fertilizer in order to get 150…

A: GIVEN: A 40% solution of fertilizer is to be mixed with a 70% solution of fertilizer in order to get…

Q: An average bagel contains 30 mg of calcium and 2 mg of iron. One ounce of cream cheese contains 25…

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Q: A chemist needs to mix an 18% acid solution with a 45% acid solution to obtain 12 liters of a 36%…

A: Consider x is the amount of 18% solution, that is 18% of x =18100×x=0.18x So according to the…

Q: A company has to buy computers and printers. Each computer costs $550 and each printer costs $390.…

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Q: A coffee company wants a new flavor of Cajun coffee. How many pounds of coffee worth $7 a pound…

A: Assume x = lbs. of coffee at $7 per lb.   Now let's write an equation the cost of mixing the $7 per…

Q: A group of 4 students need to share 20 paper clips equally how many paper clips will each student…

A: The total no. of paper clips is 20. No. of students is 4.

Q: In a 36-minute gym period, 24 boys want to play basketball. If only 10 can play at the same time,…

A: In this question we have to find how many minutes each boy play.

Q: Fifteen pounds of trail mix are made by mixing 2 pounds of raisins worth $6 per pound with peanuts…

A: Let ‘x’ pounds of peanut and ‘y’ pounds of chocolate coated candies be present in the 15 pound trail…

Q: A photographer wants to mix 4 liters of a 7% acetic acid solution with a 12% solution to get a 9%…

A: Let x be the volume of the 12% solution.

Q: A woman bought some large frames for ​$13 each and some small frames for $5 each at a closeout sale.…

A: Here we have to find total no. of large and small frame she brought

Q: A mixture of 16% disinfectant solution is to be made from 14% and 22% disinfectant solutions. How…

A: Let x gallon of 14% were used. So, (16-x) gallons of 22% are needed. Because total amount is 16…

Q: A coffee company wants a new flavor of Cajun coffee . How many pounds of coffee worth $7 a pound…

A: