Aaron has $ 20.00 and he wants to donate it away equally to 3 charities. how much money does each charity get?

Agrocery store has 12 lb of trail mix that is 10% banana chips. the store's manager would like to add banana chips to bring the new mix up to 25% banana chips. write and solve a system of equations to find out how many pounds of banana chips manager needs to add.

Two angles are complementary. the large angle is 36 more than the smaller angle. what is the measure of the large angle?

Ahiker stands at an unknown elevation before he ascends 2 miles up a mountain to an elevation of 9 miles. find the elevation of the hiker before his ascent.