CAT Question Bank - Time & Work
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2(a+b+c)=1/72+1/120+1/90
=>a+b+c=1/60
a=1/60-1/120
=1/120
=120 days.
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@rowdy-rathore x takes 43=12 days to complete the job=> work done in 1 day=1/12
y takes36=18 days to complete the job=> work done in 1 day=1/18
z takes 52=10 days to complete the job=> work done in 1 day=1/10
Work done by all of them in 3 days=3(1/12+1/18+1/10)
=3*(15+10+18)/180
=43/60
work left=17/60
if y takes a days,
work done=a1/18=17/60
=>a=(1718)/60
=>a=5.1 days
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@rowdy-rathore 15 days a alone can do the job.
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@rowdy-rathore by taking lcm of 14 and 21 we get -
3 units done by a and 2 units done by b
last 3 days b did 3*2= 6 units of work.
a nd b did 42-6=36 units of work together.
so 36/5=7.2 days by both
total days =7.2+3=10.2 days.
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This post is deleted!
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@rowdy-rathore Can you please provide the solution to this question.
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@Rowdy-Rathore The correct answer is 58.5.
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@Rowdy-Rathore 25 days B can do alone
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@Rowdy-Rathore days to complete is 10.2
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@Rowdy-Rathore 16.28 minutes
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Can you please share the solution?
