Question : P is two times more efficient than Q. P can complete a piece of work in 40 days less than Q. Working together, the whole number of days taken by them to complete the work is:
(Round off to the nearest integer)

Option 1: 26

Option 2: 25

Option 3: 27

Option 4: 28

Question : A alone can do $\frac{2}{5}$ of a work in 12 days. B is 25% more efficient than A. C alone can do the same work in 12 days less than B. D is 25% less efficient than C. If they all work together, then the work will be completed in how many days?

Option 1: $\frac{240}{53}$ days

Option 2: $\frac{180}{43}$ days

Option 3: $\frac{200}{51}$ days

Option 4: $\frac{300}{47}$ days

Question : A can complete a piece of work alone in 120 days, while A and B, working together, can complete the same work in 72 days. In how many days can B, working alone, complete this piece of work?

Option 1: 180

Option 2: 200

Option 3: 160

Option 4: 216

Question : P and Q together can complete a piece of work in 6 days. If P can alone complete the work in 18 days, the number of days required for Q to finish the work is:

Option 1: 10 days

Option 2: 8 days

Option 3: 11 days

Option 4: 9 days

Question : A and B can complete a work together in 48 days. A is 4 times as work-efficient as B. In how many days can B alone complete the work?

Option 1: 220 days

Option 2: 320 days

Option 3: 240 days

Option 4: 120 days

Question : Two persons P and Q can do a job together in 36 days. P is 3 times as efficient as Q. In how many days can Q alone complete the work?

Option 1: 148

Option 2: 140

Option 3: 144

Option 4: 146