Question

the coat price of 6 pen is equal to selling price of 5 pen .find the profit or loss percent.​

Answer 1

Answer:

As we know that

SP=CP+gain

Given 6 times CP is equal to 5 times SP

⟹6CP=5SP

⟹6CP=5(CP+gain)

⟹6CP=5CP+5gain

⟹CP=5 gain

⟹gain=

5

1

×CP=

100

20

×CP

Gain percent is 20%

Answer 2

Answer:

let cp of 1 pen be=1

foe 6 pen cp=6×1=6

sp is some so sp =6

sp of one pen=6/5

=1.2

profit=1.2-1=0.2

profit%=profit/cp×100

=0.2/1×100

=2/10×100

=20%