Question

A person purchased 10 dozen pens at the rate of 40 per dozen. On checking, he found that 20 pens were
not working. In order to earn 25% profit, at what price should he sell each pen?

Ans is rs.5 which can be approxed​

Answer 1

Step-by-step explanation:

Out of 120 pen 20 pens not working. ... He should sell each pen at Rs 5.

Answer 2

Step-by-step explanation:

Given:-

A person purchased 10 dozen pens at the rate of 40 per dozen. On checking, he found that 20 pens were not working.

To find:-

In order to earn 25% profit, at what price should he sell each pen?

Solution:-

Cost of dozen pens=Rs. 40

Cost of 10 dozen of pens=40×10=Rs. 400

Total pens are 10 dozen=10×12=120

Cost of 120 pens=Rs.400

Cost of 1 pen=400/120

=>Cost of 1 pen= Rs.10/3

Number of pens are not working=20

Remaining pens=120-20=100

Gain on it=25%

Let the selling price be SP

we know that

SP=(100+g)/100×CP

=>SP=(100+25)×(10/3)/100

=>SP=125×10/(300)

=>SP=1250/300

=>SP=125/30

=>SP=4.16

Selling Price is Rs.5 (correct it to approximately)

Answer:-

Selling Price is Rs.5 (correct it to approximately)