Isabella has $6,000. She gave her mother $1,800. She donated 1/4 of the remaining amount to a charity. What percent[..]

Chris can be paid in one of two ways. Plan A is a salary of  $390  per month, plus a commission of  7%  of[..]

the perimeter of a rectangle is 62 m. The length is four more than two times the width. What is the length?

an internet provider charges 130 setup fee and a 60 monthly fee. Find the cost C(t) of having a contract with this[..]

Against the wind a commercial airline in South America flew 360 miles in 3 hours. With a tailwind the return trip[..]

John drove 1/3 of an hour on 1/4 of a tank of gas. At that rate, how many hours can he drive on one full tank of gas?

an airplane flew for 8 hours at an airspeed of x miles per hour, and for 7 more hours at 325 mph. If the average[..]

the weight W of an aluminum flatboat varies directly with the length L of the boat. If a 9-foot boat weighs 144[..]

Two oranges and five lemons cost $2.95. Three oranges and two lemons cost $2.50. How much would five oranges and[..]

A builder is reading blueprints for a mansion. The blueprint indicates 5 inches represents 9 feet. On the blueprint,[..]