Q16 of 94 Page 134

A dealer sold a camera for Rs. 1080 gaining of its cost price. Find (i) the cost price of the camera, and (ii) the gain per cent earned by the dealer.

Hint. Let CP = Rs. x. Then, gain = Rs. Therefore, SP=Rs.=Rs.

(i) Let × be the CP of Camera.


SP of Camera = x + 1x/8 = 1080


× + x/8 = 1080


9x/8 = 1080


x= (1080 × 8) / 9


= 960.


So, the Cost Price (CP) of camera is Rs.960.


(ii) Gain = SP – CP


= 1080 – 960


= 120




= 12.5%


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