In a mixture of concrete, there are two lb of cement mix for each pound of gravel. If the mixture contains a total of 120 lb of these two ingredients, how many pounds of gravel are there?

I suck at word problems.

Question

In a mixture of concrete, there are two lb of cement mix for each pound of gravel. If the mixture contains a total of 120 lb of these two ingredients, how many pounds of gravel are there?

I suck at word problems.

anonymous · Answer

2lbs of concrete / 1 lb of gravel * 120lbs total.  
2 + 1 = 3 
120 / 3 = 40
2 * 40 = 80  = concrete
1 *40 = 40 = gravel

anonymous · Answer

sorry, that should say 80 = cement

anonymous · Answer

does this help?

anonymous · Answer

No, I'm confused @engstat