A can build a wall in the same time in which B and C togethe...

A can build a wall in the same time in which B and C together can do it. If A and B together can do it. If A and B together could do it in 25 days and C alone in 35 days, in what time could B alone do it ?

Course Name: Quantitative Aptitude

1] 91 days
2] 100 days
3] 175 days
4] None of these

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1 Discuss	A alone can do a piece of work in 6 days and B alone in 8 days. A and B undertook to do it for Rs. 3200. With the help of C, they completed the work in 3 days. How much is to be paid to C? 1] Rs. 375 2] Rs. 400 3] Rs. 600 4] Rs. 800 Solution
10 Discuss	A can do a piece of work in 70 days and B is 40% more efficient then A. Then the number of days taken by B to do the same work is = ? 1] 40 dayd 2] 60 days 3] 50 days 4] 45 days Solution
2 Discuss	A and B together can complete a work in 12 days. B and C together can complete the same work in 8 days and A and C together can complete it in 16 days. In total, how many days do A, B and C together take to complete the same work ? 1] ${ \text{3}}\frac{5}{{12}}$ 2] ${ \text{3}}\frac{9}{{13}}$ 3] ${ \text{7}}\frac{5}{{12}}$ 4] ${ \text{7}}\frac{5}{{13}}$ Solution
3 Discuss	Twenty women can do a work in sixteen days. Sixteen men can complete the same work in fifteen days. What is the ratio between the capacity of a man and a woman? 1] 3 : 4 2] 4 : 3 3] 5 : 3 4] Data Inadequate Solution
4 Discuss	Two workers A and B are engaged to do a work. A working alone takes 8 hours more to complete the job than if both worked together. If B worked alone, he would need 41/2 hours more to complete the job than they both working together. What time would they take to do the work together ? 1] 4 hours 2] 5 hours 3] 6 hours 4] 7 hours Solution
5 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
6 Discuss	There are three boats A, B and C, working together they carry 60 people in each trip. One day an early morning A carried 50 people in few trips alone. When it stopped carrying the passengers B and C started carrying the people together. It took a total of 10 trips to carry 300 people by A, B and C. It is known that each day on an average 300 people cross the river using only one of the 3 boats A, B and C. How many trips it would take to A to carry 150 passengers alone? 1] 15 2] 30 3] 25 4] 10 5] None of these Solution
7 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
8 Discuss	639 persons can repair a road in 12 days working 5 hours a day. In how many days will 30 persons working 6 hours a day complete the work ? 1] 210 days 2] 213 days 3] 214 days 4] 215 days Solution
9 Discuss	Two pipes A and B can fill a tank in 36 min. and 45 min. respectively. Another pipe C can empty the tank in 30 min. First A and B are opened. After 7 minutes, C is also opened. The tank filled up in: 1] 39 min. 2] 46 min 3] 40 min. 4] 45 min. Solution
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