Question : A man can build a wall in 70 hours. After 7 hours, he takes a break. What fraction of the wall is yet to be built?
Option 1: 0.9
Option 2: 0.8
Option 3: 0.5
Option 4: 0.75
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Correct Answer: 0.9
Solution : The work done of a man in 1 hour $=\frac{1}{70}$ ⇒ The work done of a man in 7 hour $=\frac{7}{70}=\frac{1}{10}$ The fraction of the wall that is yet to be built $=1-\frac{1}{10} = \frac{9}{10}=0.9$ Hence, the correct answer is 0.9.
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Question : Solve (0.125 × 0.01) ÷ (0.5 × 0.005).
Option 1: 0.6
Option 2: 0.5
Option 3: 0.8
Option 4: 0.7
Question : If the numerator of a fraction is increased by 140% and the denominator of the fraction is decreased by 20%, the resultant fraction is $\frac{12}{7}$. Find the original fraction.
Option 1: $\frac{4}{9}$
Option 2: $\frac{4}{7}$
Option 3: $\frac{7}{6}$
Option 4: $\frac{8}{9}$
Question : A man starts running from point P at 11:00 am with a speed of 10 km/h. He runs for 2 hours and then takes a 1-hour rest. He continues this till he is caught by another man, who starts at 2:00 pm from point P and runs nonstop at a speed of 15 km/h towards the first man. At what time (pm) will the first man be caught?
Option 1: 6:20
Option 2: 4:40
Option 3: 6:00
Option 4: 5:30
Question : Rohan and Mohit, together, can build a wall in 8 days. Mohit and Vikas can build the same wall in 10 days and Vikas and Rohan can Build the same wall in 12 days. In how many days can all three complete the same wall while working together?
Option 1: $\frac{240}{37}$
Option 2: $\frac{120}{37}$
Option 3: $\frac{150}{37}$
Option 4: $\frac{180}{37}$
Question : A journey takes 4 hours 30 minutes at a speed of 60 km/h. If the speed is 15 m/s, then the journey will take:
Option 1: 5 hours
Option 2: 5 hours 30 minutes
Option 3: 6 hours
Option 4: 6 hours 15 minutes
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