Question

Plz answer me i want help​

Answer 1

Rs 19.20

Explanation:

Buying price = Rs 20

Profit = 20% = 0.20 × 20 = Rs 4

Selling price = buying price + profit = Rs 20 + Rs 4 = Rs 24

He wants to make a 25% profit.

Let's say he should buy the pen at Rs 'a' in order to make that amount of profit.

∴ a +
`(25)/(100) a` = 24

1.25a = 24

a =
`(24)/(1.25) = 19.20`

So he should buy the pen at Rs 19.20