A,B and C can do a work in 20,45 and 120 days respectively.They started the work. A left 10 days before and B left 5 days before the completion of work. In how many days is the total work completed ?
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The life span of red blood cell is A) 130 days B) 120 days
Correct option is B) 120 days
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24 men can do a work in 14 days by working 6 hours a day. If the work is to be completed in 8 days by working 7 hours
Correct option is (B) 36 Total work done by 24 men in 14 days by working 6 hours a day \(=24\times14\times6\) Let x men are required to complete same work in 8 days...
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24 men can do a work in 14 days by working 6 hours a day. If the work is to be completed in 8 days by working 7 hours
2 Answers
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If (a+1) workers (In number) will do a work in (a+1) days then in how many days will (a+2) members of workers do the work ?
Correct option is (D) \(\frac{(a+1)^2}{a+2}\) Work done by (a+1) works in (a+1) days = (a+1) (a+1) \(=(a+1)^2\) Number of days required to complete the same work by (a+2) members \(=\frac{\text{Total work}}{a+2}\) \(=\frac{(a+1)^2}{a+2}\)
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If (a+1) workers (In number) will do a work in (a+1) days then in how many days will (a+2) members of workers do the work ?
2 Answers
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30 labourers can built a wall in 9 days. If the same wall is to be built by 20 labourers how many days they will take to complete it?
Correct option is (B) 13 1/2 Work done to complete the wall = Work done by 30 labourers in 9 days = Work done by 20 labourers in x days \(\therefore 20\times x=30\times9\) \(\Rightarrow x=\frac{30\times9}{20}=\frac{27}2\,days\) \(=13\frac12\,days\)
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30 labourers can built a wall in 9 days. If the same wall is to be built by 20 labourers how many days they will take to complete it?
2 Answers
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Fifteen men can complete a piece of work in 10 days, working 8 hours per day. How many persons are required to complete double the work in 25 days, wo
Correct Answer - 16
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A and B together can do a piece of work in 12 days, B and C can do it in 15 days and C and A can do the same work in 20 days. How long would each of t
Work done by A and B in 1 day=1/12 Work done by B and C in 1 day=1/15 Work done by C and A 1 day=1/20 Adding all the three,...
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X works 3 times as fast as Y and is able to complete a work in40 days less than the number of days taken by Y. Find the time in which they can complet
If Y does the work in 3 days, X does it in 1 day, i.e., the difference is 2 days. But the actual difference is 40 days. If difference is...
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