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Numerical Ability
Time and Work
‘A’ can complete a piece of work in 12 days. ‘A’ and ‘B’ together can complete the same piece of work in 8 days. In how many days can ‘B’ alone complete the same piece of work?
A) 15 days
B) 18 days
C) 24 days
D) 28 days
E) None of these
Read Solution (Total 6)
-
- A's one day work = 1/12
(A+B)'s one day work = 1/8
B's one day work = 1/8 - 1/12 :- LCM of 8,12 is 24
= 1/24
B alone can complete the same work in 24 days - 8 years agoHelpfull: Yes(8) No(1)
- B can only do the work in 24Days
answer : Option C - 8 years agoHelpfull: Yes(3) No(0)
- A=12=2
B=?=1
--------
A+B=8=3
lcm 8,12=24
work=24/1=24 day
- 7 years agoHelpfull: Yes(1) No(0)
- Option C is the answer
- 7 years agoHelpfull: Yes(1) No(0)
- A can do a piece of work in 12 days
so one work in one day is 1/12
both A and B complete it 8 days
so one work in one day 1/8
So 1/B=1/8-1/12=1/24
So B will complte in 24 days.... - 7 years agoHelpfull: Yes(1) No(0)
- a-12
a+b=8
lcm 0f 12,8=24
a-2,a+b=3=>b=1
24/1=24 days ans - 7 years agoHelpfull: Yes(0) No(0)
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