Question

the ratio of Ages of Minu and her brother Sudhir is 3:4 the difference between their ages is 5 years then find their present ages​

Answer 1

Let the ages be 3x and 4x

ATQ

$\\ \Large\sf\longmapsto 4x-3x=5$

$\\ \Large\sf\longmapsto x=5$

Now

$\\ \Large\sf\longmapsto Age\:of\:Minu=3x=3(5)=15years$

$\\ \Large\sf\longmapsto Age\:of\:Sudhir=4x=4(5)=20years$

Answer 2

Their present ages are 15 and 20 years.

Let the age of Minu be represented by x

Since the difference between their ages is 5 years, then the age of her brother will be x + 5.

Based on the information given in the question, the equation to use in solving the question will be:

x/(x + 5) = 3/4

Cross multiply

(4 × x) = 3(x + 5)

4x = 3x + 15

Collect like terms

4x - 3x = 15

x = 15

Minu's age is 15 years

Therefore, her brother's age will be:

= x + 5

= 15 + 5

= 20 years

In conclusion, their present ages are 15 and 20 years.

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