Asked by TUHITUHI
Sanjeev is twice as old as his son.If after four years he will be four times as old as his son was 9 years ago ,how old is each now ??
Answers
Answered by
Reiny
present:
son --- x
father --- 2x
in four years:
son x+4
father 2x+4
9 years ago:
son -- x-9
father -- 2x-9
2x+4 = 4(x-9)
2x+4 = 4x-36
-2x = -40
x=20
<b>son is now 20 , and the father is now 40</b>
check:
in 4 years:
son is 24
father is 44
9 years ago:
son was 11
father was 30
is 44 four times 11 ? YES
son --- x
father --- 2x
in four years:
son x+4
father 2x+4
9 years ago:
son -- x-9
father -- 2x-9
2x+4 = 4(x-9)
2x+4 = 4x-36
-2x = -40
x=20
<b>son is now 20 , and the father is now 40</b>
check:
in 4 years:
son is 24
father is 44
9 years ago:
son was 11
father was 30
is 44 four times 11 ? YES
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