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What will be the CP when SP=Rs 924, Gain =10%?

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Rs. 800

Rs. 940

Rs. 840

Rs. 900

answer is C.

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Detailed Solution

We are given that, S.P is Rs 924 and gain is 10% .
We have the following formula:
S.P=selling price.
C.P=cost price.
Gain=S.P-C.P

G a i n % = S . P − C . P C . P × 100

Loss=C.P-S.P

L o s s % = C . P − S . P C . P × 100

Let the C.P be x.
The C.P is,

⇒ 10 = 924 − x x × 100 ⇒ 10 x = 92400 − 100 x ⇒ 10 x + 100 x = 92400 ⇒ 110 x = 92400

Solve further,

⇒ x = 840

The C.P is Rs 840.
Therefore, the correct option is 3.

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