John has us and foreign stamps in his album. the ratio of the number of us stamps to foreign stamps is 5:2. after paul gives him 12 foreign stamps, the ratio becomes 2:1. find the number of us stamps he has.

Your food costs are $5,500. your total food sales are $11,000. what percent of your food sales do the food costs represent?

You dug a hole that was 8 feet deep. after taking a short break, you dug down 3 more feet in the same hole. when finished digging, a tractor accidentally filled the hole with 4 feet of dirt. how deep is your hole now?

Solve the equation. 2x - 8(x+1)= 6(2x - 3)