Test Preparation on Work and Time For Competitive Exam
A and B complete a work in 6 days. An alone can do it in 10 days. If both together can do the work in how many days?
1/6 + 1/10 = 8/30 = 4/15 15/4 = 3.75 days
A and B together can do a piece of work in 8 days. If A alone can do the same work in 12 days, then B alone can do the same work in?
B = 1/8 – 1/2 = 1/24 => 24 days
A can do a piece of work in 4 days. B can do it in 5 days. With the assistance of C, they completed the work in 2 days. Find in how many days can C alone do it?
C = 1/2 - 1/4 - 1/5 = 1/20 => 20 days
A and B can do a piece of work in 6 2/3 days and 5 days respectively. They work together for 2 days and then A leaves. In how many days after that B will complete the work alone.
3/20 * 2 + (2 + x)/5 = 1
x = 1 ½ days
A can do a piece of work in 30 days. He works at it for 5 days and then B finishes it in 20 days. In what time can A and B together it?
A and B can do a piece of work in 12 days and 16 days respectively. Both work for 3 days and then A goes away. Find how long will B take to complete the remaining work?
A and B can do a piece of work in 3 days, B and C in 4 days, C and A in 6 days. How long will C take to do it?
2c = ¼ + 1/6 – 1/3 = 1/12
c = 1/24 => 24 days
A can do a piece of work in 10 days. He works at it for 4 days and then B finishes it in 9 days. In how many days can A and B together finish the work?
A can do a piece of work in 40 days; B can do the same in 30 days. A started alone but left the work after 10 days, then B worked at it for 10 days. C finished the remaining work in 10 days. C alone can do the whole work in?
A work which could be finished in 9 days was finished 3 days earlier after 10 more men joined. The number of men employed was?
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