Question

The energy input to a machine is 800 J and its output is 600 J. What is the efficiency of the
machine?​

Answer 1

$efficiency = \frac{ output}{input} \times 100 \: \: \\ \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = \frac{600}{800} \times 100 \ \\ \\ \: \: \: \: \: \: \: \: \: \: = 75\%$

hope it helps..

Good luck ♧♧

Answer 2

GOOD EVENING

Radhe Radhe