Multiple Choice QuestionsA and B can do a piece of work in 18 days, B and C in 24 days, A and C in 36 days. Working together they can do the work in
12 days
13 days
16 days
16 days
Ramesh and Rahman can do a work in 20 and 25 days respectively. After doing collectively for 10 days at the work, they leave the work due to illness and Suresh completes rest of the work in 3 days. How many days Suresh alone can take to complete the whole work?
32 days
28 days
29 days
29 days
A can do as much work in 4 days as B can do in 5, and B can do as much work in 6 days as C in 7 days. In what time will C do a piece of work which A can do in a week?
days
days
A can do a piece of work in 10 days and B can do it in 12 days. They work together for 3 days. Then B leaves and A alone continues. 2 days after that C joins and the work is completed in 2 days more. In how many days can C do it, if he works alone?
30 days
50 days
40 days
40 days
The ratio of the amount of work done by (x - 1) labours in (x + 1) days and that done by (x + 1) labours in (x + 2) days is 5 : 6. Then the value of x is
16
15
17
17
Two workers A and B are engaged to do a piece of work. A working alone would take 8 hours more to complete the work than when work together. If B worked alone, would take 
more than when work together. The time required to finish the work together is
5 hours
4 hours
8 hours
8 hours
D.
8 hours
Let time taken by A and B be x.
∴ According to the question,
Time taken by A alone = (x + 8) hours
Time taken by B alonge = 
.
If x can finish a job in 4 hours and y can finish the same job in 8 hours independently, then they together will finish the job in
140 minutes
160 minutes
120 minutes
120 minutes
x can copy 80 pages in 20 hours, x and y together can copy 135 pages in 27 hours. Then y can copy 20 pages in
20 hours
3 hours
24 hours
24 hours
x does 1/4 of a job in 6 days. Y completes rest of the job in 12 days. Then x and y could complete the job together in
9 days
A supply of juice lasts for 35 days. If its use is increased by 40% the number of days would the same amount of juice lasts, is
25 days
30 days
24 days
24 days
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