A chemist needs 12 L of a 40% alcohol solution. She must mix a 20% solution and a 50% solution. How many liters of[..]

Admission prices at a high school football game were $6 for adults and $2 for children. The total value of of the[..]

A box of marbles weighs 12 pounds when it is 3/4 full. It weighs 2.9 pounds when it is 1/6 full. What is the weight[..]

a basket contains some bananas and oranges. The ratio of the number of bananas to the number of oranges in the[..]

Steven poured 8 gallons of water into his aquarium. 4/5 of the aquarium was filled. How many gallons of water does[..]

2/3 of the students in the band are girls.There are 8 boys in the band.How many students are in the band altogether?

A 10-FOOT TREE CASTS A 12-FOOT SHADOW. AT THE SAME TIME, A NEARBY CELL TOWER CASTS A 60-FOOT SHADOW. HOW TALL (IN[..]

A child is running on a moving sidewalk in an airport. When he runs against the sidewalk's motion, he travels 28[..]

Two airplanes leave an airport at the same time and travel in opposite directions. One plane travels 63 kilometers[..]

Two airplanes leave an airport at the same time and travel in opposite directions. One plane travels faster than[..]