Question

one gets Rs. 120 more when the profit% on a commodity is increased from 24% to 27% what is the cost price?

Answer 1

120=.27C-.24C 
120=.03C 

C=120/.03
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Answer 2

Let the cost price of the commodity be C then
(0.27 x C) - (0.24 x C) = 120
0.03 x C = 120
C = 120/ 0.03 = 120 x 100/3 = 40 x 100 = 4000