Question

A light bulb consumes 3600 watt-hours per day. How long does it take to consume 17200 watt-hours?

Answer 1

\[\frac{3600 watt-hour}{day}*x=17200watt-hours \rightarrow x=\frac{43}{9}days=4.777days\]
the variable x=days

Answer 2

or just divide 17200/3600, that gives you the same answer but viewed in a different light.