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IBPS RRB Officer Prelims 09 Sep 2017 Shift 2 Paper
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© examsnet.com
Question : 66
Total: 80
4 years ago A’s uncle’s age was 8 times A’s age (that time). 8 years from now, A’s uncle age would be
2
3
4
times of A’s age that time. 6 years from now what will be the respective ratio of A’s age and A’s uncle age that time?
1 : 3
4 : 7
5 : 8
7 : 12
2 : 5
Validate
Solution:
(1) 4 years ago,
A’s age = x years
A’s uncle’s age = 8x years
According to the question,
8 years hence from today,
8
x
+
12
=
11
4
(
x
+
12
)
⇒ 32x + 48 = 11x + 132
⇒ 32x – 11x = 132 – 48
⇒ 21x = 84
⇒
x
=
84
21
=
4
∴A’s present age = 8 years
A’s uncle’s present age
= (8 × 4 + 4) years = 36 years
∴Required ratio= (8 + 6) : (36 + 6)= 14 : 42 = 1 : 3
© examsnet.com
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