The cost price of 12 pens is equal to selling price of 10 pens. Find t

1.	The cost price of 12 pens is equal to selling price of 10 pens. Find the profit percentage.
Answer» Let the C.P of one pen be Rs. 1 ∴ C.P of 12 pens = Rs. 12 Given S.P. of 10 pens = C.P. of 12 pens. S.P. of 10 pens = Rs. 12 C.P of 10 pens = Rs. 10 ∴ S.P > C.P So there is gain Gain = S.P – C.P= 12 – 10 = 2 Gain percent = \(\frac{Gain}{C.P}\) × 100 = \(\frac{2}{10}\)× 100 = 20 % Gain percent = 20%

The cost price of 12 pens is equal to selling price of 10 pens. Find the profit percentage.

Answer»

Let the C.P of one pen be Rs. 1

∴ C.P of 12 pens = Rs. 12

Given S.P. of 10 pens = C.P. of 12 pens. S.P. of 10 pens = Rs. 12 C.P of 10 pens = Rs. 10

∴ S.P > C.P So there is gain

Gain = S.P – C.P= 12 – 10 = 2

Gain percent = \(\frac{Gain}{C.P}\) × 100

= \(\frac{2}{10}\)× 100 = 20 %

Gain percent = 20%