Question : 40 people were employed who could together make 60 toys in 8 hours, but 8 people left just before work was to begin. How many toys could then be made in 12 hours?

Option 1: 70

Option 2: 52

Option 3: 90

Option 4: 72

Question : P, Q, and R alone can complete a piece of work in 30 hours, 10 hours and 15 hours respectively. In how much time will they finish the work if they work together?

Option 1: 5 hours

Option 2: 4 hours

Option 3: 8 hours

Option 4: 10 hours

Question : A alone can do $\frac{1}{10}$th part of a work in 8 hours. B alone can do $\frac{1}{5}$th part of the same work in 4 hours. If they work together, then how many hours will they take to complete $\frac{9}{16}$th part of the same work?

Option 1: 9 hours

Option 2: 5 hours

Option 3: 8 hours

Option 4: 4 hours

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 : A and B together can finish a work in 7.2 hours. If B alone can finish the same work in 18 hours, then A alone can do it in:

Option 1: 18 hours

Option 2: 12 hours

Option 3: 10 hours

Option 4: 15 hours

Question : A, B, and C can complete a work in 10, 12, and 15 days respectively. They started the work together, but A left the work before five days of its completion. B also left the job two days after A left. In how many days was the work completed?

Option 1: 4 days

Option 2: 5 days

Option 3: 7 days

Option 4: 8 days