# algebra

posted by .

in a mixture if concrete, there are four lb of cement mix for each pound of gravel. if the the mixture contains a total of 195 lb of these two ingredients, how many pounds of gravel are there?

• algebra -

1/5 or 20% of the total weight is gravel.

## Similar Questions

1. ### algebra

elmer burns works for a ready-mix concrete cmpany. elmer receives an order for 3.5 cubic yards of concrete. this mixture of concrete contains sand, cement, gravel, and water, for each pound of water, there are 5 lb of sand, 2 lb of …
2. ### algebra

In a mixture of concrete, there are four lb of cement mix for each pound of gravel. If the mixture contains a total of 185 lb of these two ingredients, how many pounds of grave are there?
3. ### Algebra

A batch of concrete is made by mixing 1 part cement, 2.5 parts sand, and 3.5 parts gravel. How many pounds of sand and gravel are needed to make 300 pounds of cement?
4. ### algebra

Mixture Problems Template – Price Problems Copy the problem from the lesson: 1. A store manager wishes to reduce the price on her fresh ground coffee by mixing two grades. If she has 50 pounds of coffee which sells for \$10 per pound, …
5. ### Math

If a mixture of 24 lb. of cement, 48 lb. of sand, and 63 lb. of gravel is needed to make 1 cubic foot of concrete, how many pounds of sand are needed to pour a pool deck of 156 cubic feet?
6. ### Algebra 1

You are making up your own mix of concrete to patch a set of stairs. In order to have the proper mix, you need to mix 1 part of Portland cement with 2 parts of sand and 3 parts of gravel. A. How many total parts are in one batch of …
7. ### Math

If a mixture of 24 lb. of cement, 48 lb. of sand, and 63 lb. of gravel is needed to make 1 cubic foot of concrete, how many pounds of sand are needed to pour a pool deck of 156 cubic feet?