Question

Nimitesh is 40 years old Mohit is 60 years old How many years ago was the ratio of their ngs3:5?​

Answer 1

Answer:

10 years

Step-by-step explanation:

Let the required time be 'x' years.

'x' years ago:

Age of Nimitesh = 40 - x

Age of Mohit = 60 - x

Ratio of their ages was 3:5.

⇒ (40 - x)/(60 - x) = 3/5

⇒ 5(40 - x) = 3(60 - x)

⇒ 200 - 5x = 180 - 3x

⇒ 200 - 180 = 5x - 3x

⇒ 20 = 2x

⇒ 20/2 = 10 = x

Before 10 years,ratio of their ages was 3:5.

Answer 2

Answer:

10 years ago

Step-by-step explanation:

Nimitesh = 40 years

Mohit = 60 years

Ratio of their current age = 40:60 = 4:6

Let some number be x

4x:6x = 40:60

∴ x = 10 (∵ 4 × 10 = 40 and 6 × 10 = 60)

∴ 3x:5x = y₁:y₂

30:50 = y₁:y₂

∴ Nimitesh's previous age = 30 years

Mohit's previous age = 50 years

∴ 10 years ago, the ratio of their ages was 3:5