Question

A mechanic purchases an old watch for Rs. 80 and he expenses Rs. 10 on its repairing and sold it for Rs. 117. Find gain or loss percent ?

Answer 1

I hope this will help you

Answer 2

total cost =80 +10=90
now gain=117-90
27
now gain %= gain × 100/cp
27+100/90
30 % hope it helps you