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- 1. An aeroplane covers a certain distance of 420 Kmph in 6 hours. to cover the same distance in 4 2/3 hours, it Must travel at a speed of
A.580 Kmph
B.550 Kmph
C.540 Kmph
D.530 Kmph
Answer & Explanation
Answer: Option C 
Speed of aeroplane = 420 Kmph
Distance travelled in 6 hours
= 420 * 6 = 2520 Km
Speed of aeroplane to acver 2520 Km in 14/3
= 2520*3/14 = 540 Km
View Answer
- 2. The speed of a car is 90kmph. What is the speed in metres per second.
A.25 m/s
B.40 m/s
C.35 m/s
D.28 m/s
Answer & Explanation
Answer: Option A
km/hr to m/sec conversion:
x km/hr = (x × 5/18) m/sec
90 × 5/18 = 25.
View Answer
- 3. The speed of a car is 10 m/s. What is the its speed in kmph.
A.25 kmph
B.30 kmph
C.50 kmph
D.36 kmph
Answer & Explanation
Answer: Option D
m/sec to km/hr conversion:
x m/sec = [x x (18/5)] km/hr
10 x (18/5) 36 kmph
View Answer
- 4. A car covers a distance of 720 km in10 hrs. What is its speed in mps.
A.40 m/s
B.25 m/s
C.20 m/s
D.15 m/s
Answer & Explanation
Answer: Option C
Distance = Speed x Time
Speed = (720/10) = 72 kmph
Spees in mps = 72 x 5/18 = 4 x 5 = 20 mps.
View Answer
- 5. A man covers a certain distance by car driving at 30 km/hr and he returns back to the starting point riding on a scooter at 10 km/hr. Find his average speed for the whole journey.
A.8 Km/hr
B.17 Km/hr
C.15 Km/hr
D.12 km/hr
Answer & Explanation
Answer: Option C
= (2 x a x b)/(a + b)
= (2 x 30 x 10)/(30 + 10)
= (2 x 30 x 10)/40
= 15 km/hr
View Answer
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