Question

how much percent above the CP should of shopkeeper marks his goods so that after allowing a discount of 10% on the Marked price he earns a profit of 8%

Answer 1

Let the cost price = 100

Since he has to earn a profit of 8%, his selling price should be = 100+8 = 108

Now, this 108 is after giving 10% discount on marked price.
So 108 is 90% of marked price.

Marked price = 108 × 100/90 = 120

So Marked price is 20 more than CP.

20 = 20/100 × 100 = 20% of CP

Thus marked price is 20% more than CP

Answer 2

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Let the cost price = 100

Since he has to earn a profit of 8%, his selling price should be = 100+8 = 108

Now, this 108 is after giving 10% discount on marked price.

So 108 is 90% of marked price.

Marked price = 108 × 100/90 = 120

So Marked price is 20 more than CP.

20 = 20/100 × 100 = 20% of CP

Thus marked price is 20% more than CP

HOPE SO IT WILL HELP.........