X invested Rs. 98000 for 3 years. Y invested Rs. 42000 for certain years. For how many years should Y invest so that he receives double the profit of X?

- 12
- 13
- 14
- 15

Option 3 : 14

**Given: **X invested Rs. 98000 for 3 years. Y invested Rs. 42000 for certain years.

**Formula: **Ratio of profits after investment = ratio of sum of the product of investment amount and the time invested for.

**Calculation: **

Let Y invested for x years.

X |
Y |

98000 × 3 |
42000 × X |

ATQ,

42000x/98000 × 3 = 2/1

⇒ 42x = 98 × 3 × 2

⇒ X = 98 × 3 × 2/42 = 14 years.

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