Question

The selling price of 12 erasers is equal to cost price of 18 erasers. Find the gain or loss percent​

Answer 1

Let the CP of each pen be Rs.x.
Then,
CP of 12 pens=Rs.12
SP of 12 pens=CP of 15 pnes=Rs.15
now,gain=SP-CP=Rs.(15-12)=Rs.3
gain%=gain/cp*100
=(3/12*100)%=25%
Hence,the gain=25%.

Answer 2

Answer:

50%

Step-by-step explanation:

SP of 12 eraser = CP of 18 eraser

SP of 12 eraser = 8x

CP of 12 eraser=12x

Gain=SP-CP

Gain=18-12

=6

Gain%(Gain/CP)×100

Gain%=(6/12)×100

=50%