Question

the cost of 6 pencils is equal to the selling price of 5 pencils find the profit percent

Answer 1

Let price of 1 pencil be 1 Rs.
CP of one pencil=1 Rs.
CP of 6 pencils =6 Rs.

SP of 5 pencils=6 Rs.
Profit =SP-CP
=6/5-6/6
=36/30-30/30
=6/30
=1/5
Now,Profit%=profit/CP×100
=1/5/6/6×100
=20%
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Answer 2

Given

Cost price of 6 pencils= selling of 5 pencils

Cpx6=spx5

Sp/cp =6/5

So

Sp=6, cp=5

Sp>cp=> profit

Profit= sp-cp

=6-5

=1

Profit %= profit / cp x 100

=1/5 x 100

=20%

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