A balance of a trader weighs 20% less than it should be. Still the trader mark-up his goods to get the overall profit of 35%. What is mark-up on the cost price ?
Profit % = 35%
Thus, mark up on cost price = $$[35-20-(\frac{35\times20}{100})]\%$$
=Â $$15-7=8\%$$
=> Ans - (B)
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