A man bought bananas at the rate of 10 for 45 and sold at the rate of

1.	A man bought bananas at the rate of 10 for 45 and sold at the rate of one dozenbananas for 51. Find his gain or loss per cent.
Answer» Cost price of 10 bananas CP = Rs 45 Now,Selling price of one dozen or 12 bananas = Rs 51 Then,Selling price of 10 bananas SP= (51/12)10= 515/6= 255/6 = 42.5 Therefore, Loss% = (CP - SP/CP)100 = [(45 - 42.5)/45]100 = 2.5*100/45 = 250/45 = 5.5 %

A man bought bananas at the rate of 10 for 45 and sold at the rate of one dozenbananas for 51. Find his gain or loss per cent.

Answer»

Cost price of 10 bananas CP = Rs 45

Now,Selling price of one dozen or 12 bananas = Rs 51

Then,Selling price of 10 bananas SP= (51/12)*10= 51*5/6= 255/6 = 42.5

Therefore, Loss% = (CP - SP/CP)*100 = [(45 - 42.5)/45]*100 = 2.5*100/45 = 250/45 = 5.5 %