Question

The ratio of the two brothers is 1:4 and 5 year back the ratio was 1:3. What will be the ratio of their ages after 5 years​

Answer 1

Step-by-step explanation:

Correct option is

A

3:5

Let the present ages of the two brothers be x and 2x years 5 years back

2x−5

x−5

=

3

1

⇒3x−15=2x−5⇒x=10

∴ The present ages are 10 years and 20 years

Required ratio=

20+5

10+5

=

25

15

=

5

3

=3

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Answer 2

Answer

Let the present ages of the two brothers be x and 2x years 5 years back 2x−5x−5=31⇒3x−15=2x−5⇒x=10

∴ The present ages are 10 years and 20 years

Required ratio=20+510+5=2515=53=3:5

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