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A dealer sells a toyfor Rs 24 and gains as much per cent as the cost price of the toy. Find thecost price of the toy. |
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Answer» Let cost price be=>`Rs.x` Gain=x% of C.P=`x xx x/100=x^2/100` S.P=C.P+Gain `24=x+x^2/100` `x^2+100x-2400=0` `(x+120)(x-20)=0` x cannot be negative so `x`=cost price =`Rs.20` |
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