Question

You use an inclined plane to move furniture into a truck. You perform 105 kJ of work, but only do 88 kJ of useful work. What is the efficiency of the inclined plane?

Answer 1

\[\frac{88~\text{kJ}}{105~\text{kJ}}\]

Answer 2

what would it be out of
83.8%
34.6%
12.3%
119.0% @broken_symmetry

Answer 3

\[83.8\% = \frac{83.8}{100} \approx \frac{88}{105}\]
You're dividing by a number very close to 100, so the numerator is going to be roughly the same in percentage.

Answer 4

thanks so much @broken_symmetry