Question

1. The cost of 10 pens is 500. 2 pens are sold at 40 each. At what price should the remaining
pens be sold so as to gain 20% on the whole?
S.P. of 2 pens at 40 each
=
S.P. of 10 pens at 20% profit =
S.P. of remaining 8 pens
S.P. of 1 pen
=​

Answer 1

Answer Remaining pens should be sold at rs.70 per pen

Step-by-step explanation:

20% of 500=500*20/100=100

To gain 20% on whole

SP should be 500+100=600

2 pens are sold at 40

So remaining 8 pens should be sold at 560

So per pen should be sold at 70 rs.

70*8=560