Amina is currently twice as old as her younger brother, Saar. In 4 years, Amina will be 50% older than Saad. How old will Saad be when Amina is 18

The salary of an employee's job has five levels, each one 5% greater than the one below it. Due to circumstances, the salary of the employee must be reduced from the top (fifth) level to the second level, which results in a reduction of 122 dollars per month. month. What is the employee's present salary per month?

Suppose a student got an 82 on an exam that was worth 25% of the final grade, a 75 on another exam worth 25% of the final grade, and 93 for a homework score worth 10% of the final grade. They only have the final exam left, which is worth 40% of the final grade. What score is needed on the final exam to get a 90 for a final grade?

Annie’s barn has perimeter of 124 feet. If the barn is 24 feet wide, what is its length?

12% of the pencils in a box are red. The number of red pencils is 1/3 of the number of blue pencils. The number of red pencils is 25% of the number of green pencils. The remaining ones are purple pencils. If there are 200 purple pencils, how many pencils are in the box?

Jim and Tim share some marbles. If Jim gives Tim 4 marbles, he will have twice as many marbles as Tim. If Tim gives Jim 4 marbles, he will have 1/3 as many marbles as Jim. How many marbles does Jim have?

If 50% of a number is 100 and 20% of the same number is 40, find 70% of that number.

Lisa is 8 centimeters taller than Jakobe. Jakobe is 12 centimeters taller than Demonte. Every month, their heights increase by 2 centimeters.In 6 months, the sum of Jakobe's and Demonte's heights will be 170 centimeters more than Lisa's height.How tall is Jakobe now?