Question

A vendor bought 4 dozen eggs at Rs 4 each. 7 of these were broken. At what price per dozen should he sell the remaining eggs so as to gain 10% on the whole?

Answer 1

Dozen=12
price of each egg=Rs 4 
Total price=4*12*4
                =Rs 192
Seven were broken=4*7
                               =21
192-21=171
To gain 10% profit he should sell them at rate of
               192*110/100=211.2
12*4=Total eggs=48
Present no. of eggs=48-7=41
To gain Rs 211.2 he should sell each egg at rate of 211.2/41=Rs 5.15

Answer 2

He sell each egg in Rs 5.15 to get gain of 10%pro fit