Question : Shivam is 20 percent less efficient than Vivek. If Vivek can make a helmet in 12 days, then in how many days can Shivam make the same helmet?

Option 1: 12 days

Option 2: 18 days

Option 3: 15 days

Option 4: 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 : A is two times as efficient as B. A can complete a work in 20 days less than B. If both of them work together, then in how many days will the same work be completed?

Option 1: $\frac{40}{3}$ days

Option 2: $\frac{27}{2}$ days

Option 3: 20 days

Option 4: 15 days

Question : Sachin is 12.5 percent less efficient than Rohit. If Sachin alone can finish a work in 24 days, then in how many days will Rohit alone finish the same work?

Option 1: 16 days

Option 2: 21 days

Option 3: 18 days

Option 4: 20 days

Question : After working for 20 days, Shikha finds that only 20 percent of the work is done. She employs Tina who is 100 percent more efficient than Shikha. In how many days Tina alone can complete the whole work?

Option 1: 40 days

Option 2: 30 days

Option 3: 50 days

Option 4: 60 days