Question

Chase plays the piano and the cello. For every 2 hours he practices the piano, he practices the cello for 4 hours. If he practiced the piano for 5 hours last week, how many hours did he spend practicing the cello?

Answer 1

9 or 8

Answer 2

actually 8

Answer 3

Solve the proportion
$$ \Large \rm \frac{2~ hr~ piano}{4 ~hr ~cello}= \frac{5 ~hr~piano}{x}$$