Class VIII

If 6 men and 8 boys can do a piece of work in 10 days while 26 men and 48 boys can do the same in 2 days, the time taken by 15 men and 20 boys in doing the same type of work will be:
  1. 4 days
  2. 5 days
  3. 6 days
  4. 7 days
X can do a piece of work in 40 days. He works at it for 8 days and then Y finished it in 16 days. How long will they together take to complete the work?
  1. 13 1 days 3
  2. 15 days
  3. 20 days
  4. 26 days
X and Y can do a piece of work in 20 days and 12 days respectively. X started the work alone and then after 4 days Y joined him till the completion of the work. How long did the work last?
  1. 6 days
  2. 10 days
  3. 15 days
  4. 20 days
A and B can complete a work in 15 days and 10 days respectively. They started doing the work together but after 2 days B had to leave and A alone completed the remaining work. The whole work was completed in :
  1. 8 days
  2. 10 days
  3. 12 days
  4. 15 days
A and B can do a piece of work in 30 days, while B and C can do the same work in 24 days and C and A in 20 days. They all work together for 10 days when B and C leave. How many days more will A take to finish the work?
  1. 18 days
  2. 24 days
  3. 30 days
  4. 36 days
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