Question

12 bananas are bought for₹10 and 10 bananas are sold for₹12 . Find the gain% or loss %

Answer 1

in first the 12 banana is ₹10 the 1 banana is 10/12 means 1 banana is of 0.83 Rs
in second the 10 banana is for 12Rs then 1 banana is for 12/10 means 1.2Rs.
Now Profit = S.P - C.P
=1.2-0.83
=0.37
means it gain profit of 0.37Rs in each banana

Answer 2

c.p. of 12 bananas = 10 rs.
means c.p. of 120 bananas = 100 rs.

s.p. of 10 bananas = 12 rs.
means s.p. of 120 bananas = 144rs.

so gets a gain of 44 rs on 100 rs.
his % gain = (44/100)x100 = 44%