Science and medicine word problem (acid solution)

[zhyia]

A chemist prepares a 400-milliliter (400-ml) acid-water solution. If the solution contains 30ml of acid, what percent of the solution is acid?

400ml/30ml of acid=13.3%

Can the answer be 13.3%

 

[skeeter]

30/400 = .075

the solution is 7.5% acid