If the selling price is doubled, then profit triples. What is the profit per cent?
let the selling price be SP
Cost price be CPÂ
profit be P
As we know thatÂ
 P=SP-CP
ATQ
3P= 2SP-CP
3 (SP-CP)=2SP-CP
SP=2CP
Profit% =$$\frac{(SP-CP)}{100}CP $$
=100%
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