SSC CGL Preparation – Day 8

Practice Questions: Time and Distance

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Q1. A car travels 360 km in 6 hours. What is its speed?

A) 50 km/hr
B) 60 km/hr
C) 70 km/hr
D) 80 km/hr

Answer: B
Solution: Speed = Distance / Time = 360 / 6 = 60 km/hr

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Q2. Convert 72 km/hr into m/s.

A) 18 m/s
B) 20 m/s
C) 22 m/s
D) 25 m/s

Answer: B
Solution: 72 × 5/18 = 20 m/s

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Q3. A train 180 m long crosses a pole in 12 seconds. What is its speed in km/hr?

A) 45 km/hr
B) 54 km/hr
C) 60 km/hr
D) 72 km/hr

Answer: B
Solution: Speed = 180 / 12 = 15 m/s = 15 × 18/5 = 54 km/hr

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Q4. Two trains of lengths 150 m and 100 m cross each other in 10 seconds when moving in opposite directions. What is the relative speed?

A) 20 m/s
B) 25 m/s
C) 30 m/s
D) 35 m/s

Answer: B
Solution: Total distance = 150 + 100 = 250 m
Speed = 250 / 10 = 25 m/s

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Q5. If the speed of a train is increased by 20%, the time to cover the same distance decreases by:

A) 16.67%
B) 20%
C) 25%
D) 30%

Answer: A
Solution: Time is inversely proportional to speed.
Let original speed = 100, new speed = 120
Time decreases from 1 to 100/120 = 5/6 → 1/6 = 16.67%

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Q6. A person walks at 5 km/hr. How long will he take to walk 2.5 km?

A) 20 min
B) 25 min
C) 30 min
D) 35 min

Answer: C
Solution: Time = 2.5 / 5 = 0.5 hr = 30 min

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Q7. A boat takes 3 hours to go downstream and 5 hours to go upstream for the same distance. Find the ratio of downstream to upstream speed.

A) 5:3
B) 3:5
C) 2:1
D) 1:2

Answer: A
Solution: Downstream speed = D/3, Upstream = D/5
Ratio = (1/3):(1/5) = 5:3

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Q8. A train of 300 m crosses a platform of 200 m in 30 seconds. What is the speed?

A) 60 km/hr
B) 70 km/hr
C) 72 km/hr
D) 90 km/hr

Answer: C
Solution: Distance = 300 + 200 = 500 m
Speed = 500 / 30 = 16.67 m/s = 16.67 × 18/5 = 60 km/hr

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Q9. A man covers a journey in two parts: first half at 60 km/hr, second half at 40 km/hr. What is the average speed?

A) 50 km/hr
B) 48 km/hr
C) 52 km/hr
D) 45 km/hr

Answer: A
Solution: Average speed = (2 × 60 × 40)/(60 + 40) = 4800 / 100 = 48 km/hr

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Q10. Two people run around a circular track of 400m in opposite directions. If their speeds are 6 m/s and 4 m/s, how long will they take to meet?

A) 20 sec
B) 30 sec
C) 40 sec
D) 50 sec

Answer: A
Solution: Relative speed = 6 + 4 = 10 m/s
Time = 400 / 10 = 40 sec