Some persons can do a piece of work in 12 days. Two times the number of such persons will do half of that work in `6\ d a y s` b. `4\ d a y s` c. `3\ d a y s` d. `12\ d a y s`

Some persons can do piece of work in 12 days. Two times the number of such persons will do half of the work in (A) 9 days (B) 6 days (C) 5 days (D) 3 days

If 3 persons can do a piece of work in 4 days, then 4 persons can do it in …… days.

A can do a piece of work in 15 days, which B can do in 10 days. B worked at it for 8 days. A can finish the remaining work in 2 d a y s b. 3 d a y s c. 5 d a y s d. 10 d a y s

A works twice as fast as B. If B can complete a work in 12 days independently, the number of days in which A and B can together finish the work is 4 d a y s b. 6 d a y s c. 8 d a y s d. 18 d a y s

3 men or 6 women can do a piece of work in 20 days. In how many days will 12 men and 8 women do the same work? 3 1/2d a y s b. 3 3/4d a y s c. 4\ d a y s d. 5\ d a y s

A can do in one day three times the work done by B in one day. They together finish 2/5 of the work in 9 days. The number of days by which B can do the work alone is a. 30 d a y s b. 90 d a y s c. 100 d a y s d. 120 d a y s

A and B can do a piece of work in 12 days, B and C in 8 days and C and A in 6 days. How long would B take to do the same work alone? a. 24 d a y s b. 32 d a y s c. 40 d a y s d. 48 d a y s

A, B and C can complete a piece of work in 24, 5 and 12 days respectively. Working together, they will complete the same work in 7/(24)d a y s b. 3 3/7d a y s c. 4 d a y s d. 3 1/(13)d a y s