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The Ratio Between the Present Ages of Anu and Balbir is 5: 3, Respectively. the Ratio Between Anu'S Age 4 Years Ago and Balbir'S 4 Years Hence is 1: 1. What is the Ratio Between Anu'S Age 4 Years - Mathematics

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MCQ

The ratio between the present ages of Anu and Balbir is 5: 3, respectively. The ratio between Anu's age 4 years ago and Balbir's 4 years hence is 1: 1. What is the ratio between Anu's age 4 years hence and Balbir's age 4 years ago?

Options

  • 4: 1

  • 2: 4

  • 3: 2

  • 3: 1

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Solution

3: 1

Explanation:

Anu : Balbir  = 5 : 3 ⇒ 5x : 3x

Anu's age 4 years ago and Balbir = 1 : 1

`=(5"x"-4)/(3"x"+4)=1/1`

= 2x = 8  = x = 4

Present ages = 20 : 12

Anu's 4 years hence : Balbir 4 years ago

= 24 : 8 = 3 : 1

Concept: Average and Age
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