A, B and C can do a piece of work in 20, 30 and 60 days resp...

A, B and C can do a piece of work in 20, 30 and 60 days respectively. In how many days can A do the work if he is assisted by B and C on every third day?

Course Name: Quantitative Aptitude

1] 12 days
2] 15 days
3] 16 days
4] 18 days

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1 Discuss	A can do a piece of work in 14 days which B can do in 21 days. They begin together but 3 days before the completion of the work. A leaves off. The total number of days to complete the work is ? 1] ${ \text{6}}\frac{3}{5}$ 2] ${ \text{8}}\frac{1}{2}$ 3] ${ \text{10}}\frac{1}{5}$ 4] ${ \text{13}}\frac{1}{2}$ Solution
10 Discuss	A does half as much work as B in one -sixth of the time.If together they take 10 days to complete a work, how much time shall B take to do it alone? 1] 13.33 days 2] 20 days 3] 30 days 4] 40 days Solution
2 Discuss	A sum of money is sufficient to pay A's wages for 21 days and B's wages for 28 days. The same money is sufficient to pay the wages of both for ? 1] 12 days 2] 13 days 3] 14 days 4] 15 days Solution
3 Discuss	A can do a piece of work in 15 days, which B can do it in 10 days. B worked at it for 8 days. A can finish the remaining work in? 1] 2 days 2] 3 days 3] 5 days 4] 10 days Solution
4 Discuss	A particular job can be completed by a team of 10 men in 12 days. The same job can be completed by a team of 10 women in 6 days. How many days are needed to complete the job if the two teams work together ? 1] 4 days 2] 6 days 3] 9 days 4] 18 days Solution
5 Discuss	A job can be complete by 12 men in 12 days. How many extra days will be needed to complete the job if 6 men leave after working for 6 days ? 1] 3 days 2] 6 days 3] 12 days 4] 24 days Solution
6 Discuss	If 10 men or 20 boys can make 260 mats in 20 days, then how many mats will be made by 8 men and 4 boys in 20 days? 1] 260 2] 240 3] 280 4] 520 Solution
7 Discuss	The time taken by 4 men to complete a job is double the time taken by 5 children to complete the same job. Each man is twice as fast as a woman. How long will 12 men, 10 children and 8 women take to complete a job, given that a child would finish the job in 20 days ? 1] 4 days 2] 2 days 3] 1 day 4] 10 days Solution
8 Discuss	A is thrice good a workman as B and therefore is able to finish a job in 40 days less than B. Working together they can do it in: 1] 15 days 2] 16 days 3] 18 days 4] 20 days Solution
9 Discuss	60 men could complete a piece of work in 250 days. They worked together for 200 days. After that work had to be stopped for 10 days due to bad weather. How many more men should be engaged to complete the work in time ? 1] 10 2] 15 3] 18 4] 20 Solution
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