Question

A person sells an old machine for 550, gaining 1/10thof its cost price. Find the gain​

Answer 1

10%

Let the C.P be = x

Gain=x/10

The selling price of the article= Rs. 550 We know that, S.P= C.P + Gain

This implies that ⇒x+x/10= 550

⇒10x+x/10=550

⇒11X/10-550

11x=550x10

11x=5500

⇒x=5500/11

⇒x=500

Thus, C.P = Rs. 500 and gain =Rs. 50

Gain % gain/C.P x100

=50/500x100

10%

I hope it helps you

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