A mixture of 650 lb. of cement, 1,300 lb. of sand, and 1,700 lb. of gravel is used gravel to pour one cubic yard of concrete. How many pounds of gravel will be used to pour 6 cubic yards of concrete?

The solution would be like this for this specific problem:

Take note that the most important given is 1,700lbs of gravel.

1700 lbs of gravel * 6 cubic yards of concrete

= 10,200

Therefore, 10,200 pounds of gravel will be used to pour 6 cubic yards of concrete.