Work-Time

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Pipe A alone can fill a tank in 8 hours. Pipe B alone can fill it in 6 hours. If both the pipes are opened and after 2 hours pipe A is closed, then the other pipe will fill the tank in….
6 hours
no
3 1/2 hours
no
4 hours
no
2 1/2 hours
yes
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A and B together can do a piece of work in 12 days which B and C together can do in 16 days. After A has been working at it for 5 days and B for 7 days, C finishes it in 13 days. In how many days B could finish the work?
48 days
yes
24 days
no
16 days
no
12 days
no
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A tap drips at a rate of one drop/sec. 600 drops make 100 ml. The number of litres wasted in 300 days is….
4320000
no
432000
no
43200
no
4320
yes
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If 5 men or 7 women can earn Rs 5,250 per day, how much would 7 men and 13 women earn per day?
Rs 11,600
no
Rs 11,700
no
Rs 16,100
no
Rs 17,100
yes
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A can complete a piece of work in 18 days, B in 20 days and C in 30 days. B and C together start the work and are forced to leave after 2 days. The time taken by A alone to complete the remaining work is….
10 days
no
12 days
no
15 days
yes
16 days
no
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Working 5 hours a day, A can complete a work in 8 days and working 6 hours a day, B can complete the same work in 10 days. Working 8 hours a day, they can jointly complete the work in….
3 days
yes
4 days
no
4.5 days
no
5.4 days
no
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If A and B together can complete a piece of work in 15 days and B alone in 20 days, in how many days can A alone complete the work?
60
yes
45
no
40
no
30
no
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If two persons, with equal abilities, can do two jobs in two days, then 100 persons with equal abilities can do 100 similar jobs in….
100 days
no
10 days
no
5 days
no
2 days
yes
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If 28 men complete 7/8 of a piece of work in a week, then the number of men, who must be engaged to get the work completed in one week is….
5
no
6
no
4
yes
3
no
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A Boy and girl together fill a cistern with water. The boy pours 4 litres of water every 3 minutes and the girl pours 3 litres every 4 minutes. How much time will it take to fill 100 litres of water in the cistern?
36 minutes
no
42 minutes
no
48 minutes
yes
44 minutes
no
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