A car traveled for a total of 566 miles over the course of 8 hours on two highways. On the first highway, the car traveled at an average speed of 57 miles per hour. On the second highway, it traveled at an average speed of 79 miles per hour. For how many hours was the car on the first highway? (Do not include the units in your response.)

The local high school had 1,000 bottles of water on hand. The school issued 1/4 of  the supply to the 9th grade, 1/5 of the supply to the 10th grade, and 2/5 of the supply to the 11th grade. How many bottles remained for the 12th grade?

The gas tank in Daniel's car has a capacity of 19.1 gallons. On a trip to see his best friend, Daniel begins with 12.8 gallons of gas in the tank, He stops after driving for 2 hours and fills the tank to capacity with 14.4 gallons. When Daniel arrives at his friend's house, he has 3.7 gallons of gas left. How much gas, in gallons, did Daniel use on his trip?

In September, Ms. McLane sold 43 sets of encyclopedias. This was three more than five times the number of sets that Perrin sold. How many sets of encyclopedias did Perrin sell? А 6 В 8 C 10 D 15

Craig owns a ready mis concrete company. Craig receives an order for 1.5 cubic yards of concrete. This mixture of concrete contains sand, cement, gravel, and water; for each pound of water, there are 5lb of sand, 2lb of cement, and 7lb of gravel. Find the total weight of the order (in pounds), assuming a cubic yeard of concrete weighs 4000 lb, and how many pounds of each ingredient must be used. answer in the back of the book is:  water: 400lb sand: 2000lb cement: 800lb gravel: 2800lb please help me set up the equations needed to solve the problem and get the answers given.

A sales representative for a company estimates that her automobile gasoline consumption averages 28 mpg on the highway and 22 mpg in the city. A recent trip covered 627 miles, and 24 gallons of gasoline was used. How much of the trip was spent driving in the city?

If your car gets 34 miles per gallon of gas and you traveled 153 miles, how many galons of gas have you used?

They each have a fish tank holding 20 units of water. Whose tank holds 20 gallons, and whose holds 20 cups? Explain your reasoning.

Tyrell wants to buy bagels ans cream cheese for his 16 coworkers. He expects that each worker will eat 1 1/2 bagels and 2 servings of cream cheese. The cream cheese comes in 4 serving containers. How many bagels and containers of cream cheese will he need?

Jett’s car gets about 30 miles to the gallon.  Suppose he drives about 15,000 miles each year and gas costs an average of $3.75 per gallon.  How much money will Jett spend on gas in a year?     $1,905     $1,875     $1,810     $1,750