Question

A man purchase some eggs at 3 for ruppee 16 and sold them at 5 for ruppee 36 . Thus, he gained ruppee 168 in all. How many eggs did he purchase ?

Answer 1

cost price for 5 eggs will be :
3:16
5:?
ans=26.66666667rupees

selling price for 5 eggs will be:
36 rupees

thus:
profit= selling price for 5 eggs-cost price for 5 eggs
profit=36 rupees-26.66666667rupees
profit for 5 eggs=9.33333333333333
therefore profit for 1 egg =1.866666667
no. of eggs= total profit/profit for 1 egg
no. of eggs=ruppee 168/
rupee1.866666667
no. of eggs=90 eggs