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# A man is thrice as old as his son. If the man was 42 years old when

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Manager
Joined: 18 Jul 2019
Posts: 54
A man is thrice as old as his son. If the man was 42 years old when  [#permalink]

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25 Nov 2019, 07:10
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Difficulty:

15% (low)

Question Stats:

87% (01:56) correct 13% (01:51) wrong based on 31 sessions

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A man is thrice as old as his son. If the man was 42 years old when his son was born, find the age of the son when the man was seven times as old as the son?

a) 7 years
b) 14 years
c) 12 years
d) 14 years
e) 16 years
Senior Manager
Joined: 29 Jun 2019
Posts: 470
Re: A man is thrice as old as his son. If the man was 42 years old when  [#permalink]

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25 Nov 2019, 10:13
42+m=3m
2m=42, m=21 , 21+42=63
63-x=7(21-x)
6x=84 , x =14
So,21-14=7
Option A

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Re: A man is thrice as old as his son. If the man was 42 years old when   [#permalink] 25 Nov 2019, 10:13
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