3 persons can build a wall in 4 days, then 4 persons can build it in

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

14 workers can build a wall in 42 days. One worker can build it in

If 5 men can build a wall in 12 days, how many men can build it in 10 days?

Four persons can build a wall in 12 days . How many persons will be required to build the same will in 8 days.

If 3 persons can construct x chairs in 6 days, then 6 persons can construct x chairs in 4 days.

X persons can complete a work in Y days. Then, 3X persons can complete the same work in ……….. Days and (x)/(3) persons can complete the same work in …………….. Days.

X persons can complete a work in Y days. Then, 3X persons can complete the same work in ……….. Days and (x)/(3) persons can complete the same work in …………….. Days.

If 15 persons can do a job in 30 days, then 30 persons with twice the efficiency can do the same job in how many days ? A. 7 B. 3 . 5 C. 5 D. 7 . 5