Today a father age is twice the age of his elder son. 30 years back his age was four times than his elder son. What is the age of the father?
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the current age of the father is 60
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let father's age be x and son's age be y
according to 1st condition
x=2y
x-2y=0 1st×2
acc. to 2nd condition
x-30=(y-30)4
x-4y=-90 2nd ×1
after adding both the equation
x=90
and
y=45
according to 1st condition
x=2y
x-2y=0 1st×2
acc. to 2nd condition
x-30=(y-30)4
x-4y=-90 2nd ×1
after adding both the equation
x=90
and
y=45
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