Time and Work
Authored by Neelima Hb
Mathematics
8th Grade
CCSS covered
Used 120+ times
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15 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
A and B, working together can finish a piece of work in 6 days, while A alone can do it in 9 days. How much time will B alone take to finish it?
18 days
8 days
51 days
26 days
Tags
CCSS.HSA.CED.A.1
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
A and B can finish a piece of work in 16 days and 12 days respectively. A started the work and worked at it for 2 days. He was then joined by B. Find the total time taken to finish the work.
18 days
8 days
9 days
5 days
Tags
CCSS.HSA.CED.A.1
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
A and B can do a piece of work in 18 days; B and C can do it in 24 days while C and A can finish it in 36 days. In how many days can A, B, C finish it, if they all work together?
10 days
11 days
6 days
16 days
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Pipe A can fill an empty tank in 5 hours while pipe B can empty the full tank in 6 hours. If both are opened at the same time in the empty tank, how much time will they take to fill it up completely?
33 hours
20 hours
30 hours
10 hours
Tags
CCSS.HSA.CED.A.1
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
A can do a job in 16 days and B can do the same job in 12 days. With the help of C, they can finish the job in 6 days only. Then, C alone can finish it in
39 days
48 days
34 days
21 days
Tags
CCSS.HSA.CED.A.1
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Pipe A can fill a cistern in 6 hours and pipe B can fill it in 8 hours. Both the pipes are opened and after two hours, pipe A is closed. How much time will B take to fill the remaining part of the tank?
9 hours
7 hours
Tags
CCSS.HSA.CED.A.1
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
A and B can do a piece of work in 12 days, B and C in 15 days, and C and A in 20 days. How much time will A alone take to finish the job?
50 days
30 days
35 days
62 days
Tags
CCSS.8.EE.C.7B
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