Question

The sellingg price of 12 pens is equal to cost price of 14 pens then gain% is

Answer 1

Let the Cp of 1 pen be x

For 12,
We have
Sp=Cp of 14 =14rs
Cp =12 rs

Gain=Sp-Cp
=14-12
=2
Gan%=Gain÷Cp*100
2÷12×100
0.6×100
=60%

Answer 2

Given

Selling price of 12 pens =cost price of 14 pens

So

Spx12=cpx14

Cp/sp =12/14

If sp=14
Then cp=12

Profit =14-12=2

Profit % /gain%= profit /cp x100

Or gain/cp x100

=2/12 x100

=100/6%

= 16. 6667%

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