Question : Dev completed the school project alone in 40 days. How many days will Arun alone take to complete the same work if he is 25% more efficient than Dev?

Option 1: 35 days

Option 2: 14 days

Option 3: 32 days

Option 4: 16 days

Question : Reshma alone can do a work in 14 days. Bhavana is 40% more efficient than Reshma. The number of days, Bhavana alone will take to do the same piece of work is:

Option 1: 10 days

Option 2: 40 days

Option 3: 28 days

Option 4: 14 days

Question : After working alone for 12 days, Reena finds that only 10% of the work is completed. She employs Priya who is 40% more efficient than Reena. How many more days will they together take to complete the remaining work?

Option 1: 30 days

Option 2: 50 days

Option 3: 45 days

Option 4: 40 days

Question : A alone can complete a work in 16 days and B alone can complete the same work in 96 days. In how many days both A and B together can complete the same work?

Option 1: $\frac{88}{13}$ days

Option 2: $\frac{96}{7}$ days

Option 3: $\frac{96}{13}$ days

Option 4: $\frac{88}{14}$ days

Question : A can do a piece of work alone in 40 days. A and B together can do the same work in 10 days. C is 50% less efficient than B. In how many days can A and C together complete the same work?

Option 1: 20 days

Option 2: 24 days

Option 3: 16 days

Option 4: 12 days

Question : X alone can complete a piece of work in 16 days, while Y alone can complete the same work in 24 days. They work on alternate days starting with Y. In how many days will 50% of the total work be completed?

Option 1: $\frac{24}{3}$ days

Option 2: $\frac{29}{3}$ days

Option 3: $\frac{32}{3}$ days

Option 4: 9 days