BPSC 63rd Prelims Exam 01 Jul 2018 Solved Paper

Question : 143 of 150

Marks: +1, -0

A man gains 20% by selling an article for a certain price. If he sells it at double the price, the percentage of profit will be

Solution:

Profit (%)

=\;{\;\text " Profit "\;}/{\;\text " cost price "\;}=\;{20}/{100}=\;{1}/{5}

If profit is

1,

then cost price

=5

Selling price

=

cost price

+

profit

=5+1=6

If selling price is double

=12

then profit (%)

=\;{\;\text " selling price "\;-\;\text " cost price "\;}/{\;\text " cost price "\;} × 100

=\;{12-5}/{5} × 100=\;{7}/{5} × 100=140 \%

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