Question

2. If the selling price of 10 pens is equal to the cost price of 14 pens .find gain percent​

Answer 1

Answer:

40%

Step-by-step explanation:

14cp=10sp

14/10=sp/cp

gain=14_10=4

%p=4/10×100

=40%

Answer 2

Answer:

40%

Step-by-step explanation:

$\sf \: solution$

Let the CP of 1 pen be rs10

Then,

CP of 14 pens will be 14×10=140

And

CP of 14 pens=SP of 10 pens

Hence..

SP of 10 pens = 140

Then,,

SP of 1 pen=140÷10=14

Gain=SP-CP. → 14 - 10→ Rs 4

Gain%=gain/CP×100

→ 4/10×100 =40%

Your ans. is 40% gain