Question : A work can be completed by N men in 15 days. 5 men leave the work after 3 days. The remaining work was completed in 18 days. What is the value of N?

Option 1: 18

Option 2: 21

Option 3: 15

Option 4: 12

Question : A certain number of men completed a piece of work in 60 days. If there were 8 men more, the work could be finished in 10 days less. The number of men originally was:

Option 1: 36

Option 2: 40

Option 3: 30

Option 4: 32

Question : 9 boys and 12 men can complete a work in 24 days. Each boy takes thrice the time taken by a man to complete the work. In how many days will 15 men complete the same work?

Option 1: 26 days

Option 2: 30 days

Option 3: 24 days

Option 4: 22 days

Question : There are 300 men in a group. They have food for 30 days. After 10 days, 100 more men join the group. The remaining food will last for how many days?

Option 1: 20

Option 2: 10

Option 3: 15

Option 4: 12

Question : If A can do a work in 21 days and B can do the same work in 28 days. In how many days will they complete the work if they work on alternate days?

Option 1: 22 days

Option 2: 28 days

Option 3: 20 days

Option 4: 24 days