SSC CPO SI and ASI Model Paper 5

Question : 110 of 200

Marks: +1, -0

Rahul sold a calculator at a gain of 8%. Had he sold it for ₹ 90 more, he would have gained 12%. Find out the cost price of the calculator.

Solution:

(2) Let the cost price of calculatorbe ₹ x.
According to the question,

{108X} /100+90 ={112X}/ 100-{108X}/100

⇒90 ={112 X}/100 -{108X}/100

⇒

90= {112 X-108X}/100

⇒90= {4X}/100

⇒X={90 ×100}/4⇒X=₹2250

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