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14 Feb 2016, 04:15
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D
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
15%
(low)
Question Stats:
80% (01:16) correct
20%
(01:39)
wrong
based on 68
sessions
History
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A woman is 4 times as old as her daughter. In 3 years she will be 3 times as old as her daughter. How old is the woman now?
A. 3 years
B. 6 years
C. 12 years
D. 24 years
E. 36 years
A. 3 years
B. 6 years
C. 12 years
D. 24 years
E. 36 years
14 Feb 2016, 10:39
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Let Woman's present age = w
and daughter's present age = d
w= 4d --- equation 1
w+3 = 3(d+3)
=>w = 3d +6 --- equation 2
From 1 and 2 , we get
d=6
w=24
Answer D
and daughter's present age = d
w= 4d --- equation 1
w+3 = 3(d+3)
=>w = 3d +6 --- equation 2
From 1 and 2 , we get
d=6
w=24
Answer D
20 Jan 2018, 23:00
Kudos
Bookmarks
Now:
W = 4D Equation 1
In three years:
W + 3 = 3*(D + 3)
W + 3 = 3D + 9 Equation 2
Substitute Equation 1 into Equation 2:
4D + 3 = 3D + 9
D = 6
Since W = 4D and D = 6, then W = 24 (Answer D)
W = 4D Equation 1
In three years:
W + 3 = 3*(D + 3)
W + 3 = 3D + 9 Equation 2
Substitute Equation 1 into Equation 2:
4D + 3 = 3D + 9
D = 6
Since W = 4D and D = 6, then W = 24 (Answer D)
