Question

There is a family. The sum of ages of the parents Is equal to the twice of the ages of their 3 children. After 30 years the sum of the age of parents comes out to be equal to their children. Find the sum of parents and children's ages

Answer 1

Answer:

90

Step-by-step explanation:

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Answer 2

Answer:

The sum of ages of the parents let be 60 years

sum of the ages of 3 children = 60/2 = 30 years

Step-by-step explanation:

The sum of ages of the parents let be x

So sum of the ages of 3 children = x/2

The sum of ages of the parents after 30 years = x + 60

sum of the ages of 3 children after 30 years = x/2 + 90

As these sums are equal

x + 60 = x/2 + 90

x - x/2 = 90- 60

x/2 = 30

x = 30 × 2

x = 60 years

The sum of ages of the parents let be 60 years

sum of the ages of 3 children = 60/2 = 30 years