Question

a man is 5 years elder than wife and they have 9 years old child . if the total of ages of that man and his wife is 7 times the age of their son . what is the age of that man​

Answer 1

Step-by-step explanation:

Given that, man is 5 years older than his wife and wife is thrice as old as daughter.

Daughter is 10 years old.

Let the man's age be M, wife's age be W and daughter's age be D.

Thus according to given condition, we have

M=W+5 ....(1),

W=3D ....(2)

and D=10 ....(3)

Putting d=10 in equation (2), we get

W=3D=3×10=30

Put W=30 in equation (1), we get

M=W+5=30+5=35

So, man's age when his daughter was born will be 35−10=25 years.

Answer 2

Answer:

25 years

Step-by-step explanation:

Given that, man is 5 years older than his wife and

wife is thrice as old as daughter.

Daughter is 10 years old.

Let the man's age be M, wife's age be W and

daughter's age be D.

Thus according to given condition, we have

M=W+5 ....(1),

W=3D ....(2)

and D=10 ....(3)

Putting d=10 in equation (2), we get

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W=3D=3×10=30

Put W=30 in equation (1), we get

M=W+5=30+5=35

So, man's age when his daughter was born will be 35−10=25 years.