Question

a shopkeeeper gained rs 8 by selling a pem allowing 10% doscount .he would have gained rs.20 if tje discount was not allowed . wjat was the selling price of the pen
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Answer 1

Answer:-

Let the marked price be x

When the shopkeeper is selling for x, his gain is Rs. 20

Cost price = Marked price-Gain

= x - 20 -------------(I)

After discount:

Discount=10%

Marked price after discount=(100-10%) of x = 90% of x

=0.9*x

=0.9x

When the shopkeeper is selling for 0.9x, his gain = Rs. 8

Cost price= Marked price-gain

= 0.9-8 ----------------(II)

From (I) and (II)

x-20=0.9x-8

x=0.9x-8+20

x=0.9x+12

x-0.9x=12

0.1x=12

x=12/0.1

x=120

Marked price of pen = Rs. 120

Cost price=Rs. (120-20)

Cost price=Rs. 100

@BengaliBeauty

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