A shopkeeper sells a heater at 20% profit. Had he bought it for 10% less and sold it for Rs. 18 less, he would have gained 25%. What is the cost price?
Correct answer B. Rs. 240
Explanation
Let CP = x. New SP = 1.2x - 18 must equal 1.25 × 0.9x = 1.125x. So 0.075x = 18 and x = Rs. 240.
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