By selling 100 toys, a dealer gains the selling price of 20 toys. Find his gain percent.
tyg yarieties of rice, one costing * 35 per kg and another at 45
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Let SP of 1 pencil is 1 Rs. 1
SP of 100 pencils is Rs. 100
CP of 1 pencil is Rs. x
CP of 100 pencils is Rs. 100x
According to question,
Gain = SP - CP
20 = 100 - 100x
100x = 80
x=80100=45, x=45
CP of 1 pencil = Rs. 45
CP of 100 pencils =45×100 = Rs. 80
SP of 100 pencils = Rs. 100
∴ gain% = 2080×100 = 25%
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