Respuesta :

Answer:

18 shovels of sand

Step-by-step explanation:

We know

A builder mixes cement with sand using a 1:6 ratio.

This means for every 1 shovel of cement, he needs 6 shovels of sand.

He uses 3 shovels of cement.

How many shovels of sand does he need?

We take

3 x 6 = 18 shovels of sand

So, the builder needs 18 shovels of sand.