Question

A shopkeeper bought pens at the rate of 12 pens for Rs.150 and sold them at the rate of 10 pens for Rs.130.The number of pens he should sell to earn a net profit of Rs.20​

Answer 1

Answer:

20

Step-by-step explanation:

12-150 10is 130 left 12-10is 2 2is

Answer 2

Answer:

40

Step-by-step explanation:

12 pens bought @ 150

CP of 1 pen = 150/12 = 12.5

CP of 10 pens = 125, SP of 10 pens = 130 ;

Profit = Rs. 5 per 10 pens.

::  40 pens will give profit of Rs. 20