Question

if the Cp of 20 pens is equal to the SP of 16 pens then find the gain or loss percent​

Answer 1

Answer:

Let CP of a pen be Rs 16.

CP of 20 pens = 20 * 16 = 320

SP of 1 pen = 320 / 16 = Rs 20

Since, SP > CP, it is a gain

Gain (%) = [(SP - CP) / CP] * 100

              = [(20 - 16) / 16] * 100

              = 25

Answer = Gain of 25%