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25 Jun 2019, 16:37
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Difficulty:
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Question Stats:
79% (02:01) correct
21%
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wrong
based on 78
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A man, a woman, and a boy can complete a work in 20 days, 30 days, and 60 days respectively. How many boys must assist 2 men and 8 women so as to complete the work in 2 days?
A. 8
B. 12
C. 4
D. 6
E. 10
A. 8
B. 12
C. 4
D. 6
E. 10
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25 Jun 2019, 16:52
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Let total work= LCM(20, 30, 60)= 60 units
Number of unit work is done by a man in 1 day= 3
Number of unit work is done by a women in 1 day=2
Number of unit work is done by a child in 1 day=1
Hence 2*{(2*3)+(8*2)+(n*1)}= 60
n=8
Number of unit work is done by a man in 1 day= 3
Number of unit work is done by a women in 1 day=2
Number of unit work is done by a child in 1 day=1
Hence 2*{(2*3)+(8*2)+(n*1)}= 60
n=8
DisciplinedPrep
22 Jun 2021, 10:25
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