Question

Sand, gravel and cement are mixed in a ratio of 5 : 10 : 3 to make concrete. If 35 shovels of sand are used, how many shovels of gravel, and how many shovels of cement are used?

Answer 1

35 shovels of sand
70 shovels of gravel
21 shovels of cement

Answer 2

70 shovels of gravel, and 21 shovels of cement.

Explanation:

35/5 = 7.

10 x 7 = 70, which is the number of shovels for gravel.

3 x 7 = 21, which is the number of shovels for cement.