Question : A labourer can do a job in 36 hours. After 9 hours, he takes a break. What fraction of the job is yet to be done?

Option 1: 0.5

Option 2: 0.25

Option 3: 0.75

Option 4: 0.2

Question : The value of $\frac{27 \times(0.25)^3+125(0.05)^3}{(0.75)^2-0.25 \times 0.5}$ is :

Option 1: 1

Option 2: 0.75

Option 3: 0.25

Option 4: 0.5

Question : A man is walking at a speed of 14 km/h. After every km, he takes a rest for 7 minutes. How much time will he take to cover a distance of 7 km?

Option 1: $1 \frac{1}{5}$ hours

Option 2: $2 \frac{1}{3}$ hours

Option 3: $1 \frac{1}{3}$ hours

Option 4: $\frac{1}{5}$ hours

Question : A and B can complete a task together in 18 hours. After 6 hours, A leaves. B takes 36 hours to finish the rest of the task. How many hours would it have taken A to do the task if he worked alone?

Option 1: 54

Option 2: 45

Option 3: 21

Option 4: 27

Question : A father can do a job as fast as his two sons working together. If one son does the job in 3 hours and the other in 6 hours, the number of hours taken by the father to do the job alone is:

Option 1: 1 hour

Option 2: 2 hours

Option 3: 3 hours

Option 4: 4 hours

Question : A fraction is greater than its reciprocal by $\frac{9}{20}$. What is the fraction?

Option 1: $\frac{5}{4}$

Option 2: $\frac{4}{5}$

Option 3: $\frac{3}{4}$

Option 4: $\frac{4}{3}$