A can do $\frac{1}{3}$ rd of work in 5 days and B can do t...

A can do $\frac{1}{3}$ rd of work in 5 days and B can do the do $\frac{2}{5}$ th of this work in 10 days. Both A and B, together can do the work in?

Course Name: Quantitative Aptitude

1]
${ \text{ 7}}\frac{3}{8}{ \text{ days}}$
2]
${ \text{8}}\frac{4}{5}{ \text{ days}}$
3]
${ \text{9}}\frac{3}{8}{ \text{ days}}$
4]
10 days

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1 Discuss	Ganga and Saraswati, working separately can mow field in 8 and 12 hours respectively. If they work in stretches of one hour alternately. Ganga is beginning at 9 a.m., when will the moving be completed? 1] 6:20 PM 2] 6:30 PM 3] 6:36 PM 4] 6:42 PM Solution
10 Discuss	25 men with 10 boys can do in 6 days as much work as 21 men with 30 boys can do in days. How many boys must help 40 men to do the same work in 4 days ? 1] 5 2] 10 3] 20 4] 40 Solution
2 Discuss	P is thrice as good a workman as Q and therefore able to finish a job in 48 days less than Q. Working together, they can do it in ? 1] 18 days 2] 24 days 3] 30 days 4] 12 days Solution
3 Discuss	A can do a piece of work in 18 days. He worked at it for 12 days and B finished the remaining work in 8 days. B alone can do the whole work in ? 1] 16 days 2] 24 days 3] 35 days 4] 28 days Solution
4 Discuss	20 men can do a piece of work in 18 days. They worked together for 3 days, then 5 men joined. In how many days is the remaining work completed ? 1] 12 days 2] 14 days 3] 13 days 4] 15 days Solution
5 Discuss	A tank can be filled with water by two pipes A and B together in 36 minutes. If the pipe B was stopped after 30 minutes, the tank is filled in 40 minutes. The pipe B can alone fill the tank in: 1] 45 minutes 2] 60 minutes 3] 75 minutes 4] 90 minutes Solution
6 Discuss	A is thrice as good as workman as B and therefore is able to finish a job in 60 days less than B. Working together, they can do it in: 1] 20 days 2] 22 1/2 day 3] 25 days 4] 30 days Solution
7 Discuss	X can do a piece of work in 24 days. When he had worked for 4 days, Y joined him. If complete work was finished in 16 days, Y can alone finish that work in ? 1] 27 days 2] 36 days 3] 42 days 4] 18 days Solution
8 Discuss	The charges per hour of internet surfing is increased by 25% then find the percentage decrease in the time period of surfing user (a net savy) who can afford only 10% increase in expenditure: 1] 22% 2] 12% 3] 15% 4] 9.09% Solution
9 Discuss	Two men and women are entrusted with a task. The second man needs three hours more to cope up with the job than the second man and the woman would need working together. The first man, working alone, would need as much time as second man and the woman working together. The first man working alone, would spend eight hours less than the double period of the time second man would spend working alone. How much time would the two men and the women need to complete the task if they all asked together? 1] 1 hour 2] 2 hours 3] 3 hours 4] 4 hours 5] 5 hours Solution
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