# One man calculates his profit on cost price and and the other one on s

| One man calculates his profit on cost price and and the other one on selling price. Both claim to have a profit of 25%. Their selling prices are same and the difference between their profits is Rs. 9. Find the cost price for each man.

A. Rs.140, Rs.150

B. Rs.144, Rs.135

C. Rs.81, Rs.72

D. Rs.108, Rs. 126

### Right Answer is: B

#### SOLUTION

25% =

For the first man, the selling price is 5 and the cost price is 4.

For the second man, the selling price is 4 and the cost price is 3.

Because the selling price is the same in both cases.

Lcm of 5 and 4 is 20.

The selling prices will be 20.

and cost prices will be 16 and 15 respectively.

the difference in their profits 5 – 4 = 1

1 represents 9

cost prices:

16 Rs. 144

15 Rs. 135

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One man calculates his profit on cost price and and the other one on s