Quantitative Aptitude :: Time and Work - Discussion
Home > Quantitative Aptitude > Time and Work > MCQs Questions Discussion
219 / 0
A
B
Coption1
Doption2
Eoption3
Foption4
G
H
Ioption1
Joption2
Koption3
Loption4
M
N
Answer: Option (Login/Signup)
Show Explanation
Asked In ::
STEP-BY-STEP
A=8 hrs ,B=10 hrs ,C= 12 hrs
Work done by them together in 1hr=1/8+1/10+1/12= 37/120
In 2hrs=37/60. Work left= 23/60
Now A left after 2 hrs so remaining 23/60 will be done by B & C together.
If B & C work together in 1 hour they can do 1/10+1/12=11/60
So 11/60 in 1 hr. So 1 in 60/11 hr.
Therefore 23/60 in 23/60 * 60/11= 23/11hours.
Work done by them together in 1hr=1/8+1/10+1/12= 37/120
In 2hrs=37/60. Work left= 23/60
Now A left after 2 hrs so remaining 23/60 will be done by B & C together.
If B & C work together in 1 hour they can do 1/10+1/12=11/60
So 11/60 in 1 hr. So 1 in 60/11 hr.
Therefore 23/60 in 23/60 * 60/11= 23/11hours.
Read Full Answer
Report Error
Please Login First Click Here