Question

Josh made
$234
for
18
hours of work.
At the same rate, how many hours would he have to work to make
$91
?

Answer 1

$234\ \ for\ 18\ hours\\ 91\ \ for\ x\ hours\\\\ Ratio:\\ 234-18\\ 91-x\\\\Cross\ multiplication\\\\ 234x=18*91\\ 234x=1638\ \ \ | divide\ by\ 234\\x=7\\\\ To\ make\ 91\ \ he\ works\ 7\ hours.$