Question

present the sum father's and son age is 50 years after 5 years the age of father becomes 3 trimester age of his son
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Answer 1

Answer:

let x be fathers age and y be sons age

acc to the question

x+y=50---(1)

after 5yrs

fathers age=x+5 yrs

sons age=y+5yrs

acc to condition

x+5=3(y+5)

x+5=3y+15

x-3y=10---(2)

:.subtracting equation 1from 2

x-3y=10

(-)x+y=50

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-4y=-40

:.y=10substituting value of y in equation 2

x-3(10)=10

x=40

:. Sons age is 10yrs and fathers age is 40yrs

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Answer 2

Answer:

Let Father's age be F and Son's age be S

then 5 years ago,

F−5=7(S−5)

F=7S−30

5 years hence,

F+5=3(S+5)

F=3S+10

Thus, 7S−30=3S+10

4S=40 or S=10

and, F=40 years

Father's age is 40 years

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