How about this problem?

Question

if the relationship b/w mass and volume for copper is 8.94g per mL, what is the volume of 250g of copper

Answer 1

If 1mL = 8.94g, then some number x (in mL) = 250g

Set up ratios:

1 / 8.94 = x / 250. Solving for x,

x = 250 / 8.94

= 27.964

~= 28mL

Answer 2

approx. 2235=V