Question

On selling 45 pens for Rs 40, a man loses by 20%. If he wishes to make a profit of 20%, how many pens should he sell for Rs. 16?
1. 14
2. 20
3. 12
4. 15

Answer 1

Correct Answer - Option 3 : 12

Given:

On selling 45 pens for Rs 40, a man loses by 20%

Formula Used:

[N1 × (100 ± Profit/loss%)] / R1 = [N2 × (100 ± Profit/loss%)] / R2

Where, N = no. of articles, R = rate of articles

Calculation:

Putting values,

[45 × 80]/40 = [N2 × 120]/16

⇒ 90 × 16 = N2 × 120

⇒ 3 × 16 = N2 × 4

⇒ N2 = 12

∴ He should sell 12 पेन for Rs. 16.