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12 Jun 2020, 11:55
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C
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Difficulty:
25%
(medium)
Question Stats:
66% (00:49) correct
34%
(01:17)
wrong
based on 68
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Today is Saurabh's birthday. One year from today he will be twice as old as he was 10 years ago. How old is Saurabh today?
A. 19 years
B. 20 years
C. 21 years
D. 22 years
E. 23 years
A. 19 years
B. 20 years
C. 21 years
D. 22 years
E. 23 years
yashikaaggarwal
Senior Moderator - Masters Forum
Joined: 19 Jan 2020
Last visit: 29 Mar 2026
Posts: 3,088
Own Kudos:
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Location: India
Schools: Cranfield (A) Warwick MiM "23 (M)
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WE:Analyst (Internet and New Media)
12 Jun 2020, 12:05
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Let saurabh age be x
Therefore his age after 1 year = x+1
Before 10 years = x-10
X+1 = 2(X-10)
X+1 = 2X-20
21 = X
Answer is C
Posted from my mobile device
Therefore his age after 1 year = x+1
Before 10 years = x-10
X+1 = 2(X-10)
X+1 = 2X-20
21 = X
Answer is C
Posted from my mobile device
12 Jun 2020, 12:11
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Bookmarks
C
Let his present age be x.
After one year his age will be x+1 ---equation 1
Twice of his age ten years back was 2(x-1) ---equation 2
Equate both the equation.
Posted from my mobile device
Let his present age be x.
After one year his age will be x+1 ---equation 1
Twice of his age ten years back was 2(x-1) ---equation 2
Equate both the equation.
Posted from my mobile device
