21. 12 people can do a work in 4 days. So how many people get 8 times the work in half the time? Will you be able to?

12 persons can do a piece of work in 4 days. How many persons are required to complete 8 times the work in half the time? 144 b. 190 c. 180 d. 192

X can do 3/4 of a work in 12 days. In how many days X can finish the 1/2 work?

27. 15 people completed a work in 7 days 10 How many days should people take to complete this work?

30 persons can do a piece of work in 24 days. How many more people are required to complete the work in 20 days?

12 men of 15 women can do a work in 40 days. 8 men and 10 women can do the work in how many days?

Six people can do a piece of work in 8 days. How long will it take 12 people to do this piece of work ?

15 persons can do a piece of work in 12 days. How many more people are required to complete the work in 10 days?