-
An increase of 20% in the price of mangoes enables a person to purchase 4 mangoes less for $ 40. The price of 15 mangoes before increase was
-
- $ 10
- $ 15
- $ 20
- $ 25
Correct Option: D
Let the original price of 1 mango be y.
| New rate = 120% of y = | 5 |
| Number of mangoes bought in $ 40 = | y |
| New quantity = | = | 6y | 3y |
| ∴ | - | = 4 | y | 3y |
| ⇒ | = 4 ⇒ | = 4 | 3y | 3y |
| ⇒ 3y = 5 ⇒ y = $ | 3 |
| ∴ Price of 15 mangoes before increase = | × 15 = $ 25 | 3 |
