Difference of ages of father and son is 24 years. Two years back age of father was twice the son’s present age. What is father’s age now?
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let the age of father will be x years and his son's age will be y years
by first condition
x-y =24 ........ 1
by second condition
2x+2y =0 ........ 2
multiple equation 1 by 2
2x-2y =48 ......... 3
add equation 3 and 1
2x-2y =48
2x+2y =0
_________
4x =48
therefore x=12
the age of father will be 12 years
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