Question : If 45 persons can complete a work in 18 days, working 8 hours a day, then how many persons are required to complete two-thirds of the same work in 20 days, working 9 hours a day?

Option 1: 36

Option 2: 40

Option 3: 30

Option 4: 24

Question : Working 7 hours a day, 18 persons can complete a certain work in 32 days. In how many days would 14 persons complete the same work, working 8 hours a day?

Option 1: 42

Option 2: 30

Option 3: 35

Option 4: 36

Question : If 10 men can complete a piece of work in 12 days by working 7 hours a day, then in how many days can 14 men do the same work by working 6 hours a day?

Option 1: 15

Option 2: 16

Option 3: 10

Option 4: 12

Question : Directions: Which two numbers should be interchanged to make the given equation correct?
36 × 12 + 48 ÷ 6 –18 = 202

Option 1: 6 and 18

Option 2: 6 and 12

Option 3: 36 and 18

Option 4: 36 and 48

Question : A and B together can do a certain work in $x$ days. Working alone, A and B can do the same work in ($x$ + 8) and ($x$ + 18) days, respectively. A and B together will complete $\frac{5}{6}$th of the same work in:

Option 1: 12 days

Option 2: 8 days

Option 3: 10 days

Option 4: 9 days