11) 10 women can complete a work in 7 days and 10 children take 14 days to complete the work. How many days will 5 women and 10 children take to complete the wo
12) A alone can complete a work in 16 days and B alone can do in 12 days. Starting with A, they work on alternate days. The total work will be completed
13) 5 men and 2 boys working together can do four times as much work as a man and a boy. Working capacity of man and boy is in the ra
14) A can do a certain job in 25 days which B alone can do in 20 days. A started the work and was joined by B after 10 days. The number of days taken in completing the wotk wer
15) Worker A takes 8 hours to do a job. Worker B takes 10 hours to do a job. How long should it take both A and B, working together to do same jo
16) A and B can together complete a piece of work in 4 days. If A alone can complete the same work in 12 days, in how many days can B alone complete that work
17) A does a work in 10 days and B does the same work in 15 days. In how many days they together will do the same work
18) A can finish a work in 18 days and B can do same work in half the time taken by A. then working together, what part of same work they can finish in a d
19) A tyre has two punctures. The first puncture alone would have made the tyre flat in 9 minutes and the second alone would have done it in 6 minutes. If air leaks out at a constant rate, how long does it take both the punctures together to make it flat
20) A is twice as good as workman as B and together they finish a piece of work in 18 days. In how many days will B alone finish the wor
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