3 pumps, working 8 hours a day, can empty a tank in 2 days. How many hours a day must 4 pumps work to empty the tank in 1 day?

a) 8

b) 9

c) 10

d) 11

e) 12

Tracy deposited $59 into a bank account that earned 3.5% simple interest each year. If no money was deposited into or withdrawn from the account, how much money was in the account after 112 years? Round your answer to the nearest cent.

A machine Shop has 100 drill presses and other machines in constant use. The probablility that a machine will become inoperative during a given day is. 002.

Simplify as much as possible. [2 (x^-2) (x^4/5) (y^6) / x+y ]^-3

Write an equation that express retail price r in terms of cost

What is the answer to 1 yd minus 1ft 1 in

What Percent of 250 is 70? a) 3.6% b) 18% c) 28% d) 175% can someone explain how u got the answer?

What is the square root of 81 and multiplied that by 2?

An elementary school received a donation of $1,000. The school has 4 kindergarten classes and 3 classes each in grades 1 through 6. Can the money be divided equally among the classes?

What is the greatest common factor between 120 and 88?

What is the volume of a right circular cylinder with a radius of 5 cm and a height of 12 cm? 60pi cm^3 120pi cm^3 300pi cm^3 1200pi cm^3