Numerical Ability

Question.no.119

 Man bought 5 pencils for Rs.4 and sells pencils for Rs.5. The gain percent in the transaction is..?

A)25%
B)20%
C)56(1/4)%
D)50%


Answer..

Actual rate of 4 pens = 16
Slod rate of pens = 20
20/100=0.2
20-16=4
4/0.2=20

B)20%