Question

selling price is 12 profit is 20% find cost price

Answer 1

Profit = SP - CP
20CP/100 = 12 - CP
1.2CP = 12
CP = Rs10.


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Answer 2

Let the cost price be Rs x .
SP = Rs 12
Profit = 20%
Therefore , x + 20%of x = 12
or, x+20x/100 = 12
or, x+ x/5 = 12
or, 6x/5 = 12
or, x = 10 .
So , Cost price is Rs 10 .
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