What will be the C.P of Blackboard? If

A trader marks his goods 20% above C.P but allows his customers a discount of 10%. The C.P of a blackboard, which is sold for Rs. 216 is:

  1. Rs.200
  2. Rs.180
  3. Rs.108
  4. Rs.196
Monis Rasool Professor Asked on 5th July 2015 in Maths.
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1 Answer(s)

Answer: (1) Rs.200
Explanation:-

Let be the C.P. of a black board = Rs.100
He marks 20% above C.P.
Then, the C.P. = 100 + 100 x 20/100 = 100 + 20 = Rs.120
He gave 10% discount
Then, the selling price = 120 – 120 x 10/100 = 120 – 12 = Rs.108
the C.P of black board = 216 x 100/108 = Rs.200

Hence, the C. P. of a black board is Rs.200.          Ans.

Anurag Mishra Professor Answered on 8th July 2015.
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