Time, Speed and Distance SSC CHSL Questions

Time, Speed and Distance MCQ Questions

1.
A car covers a distance of 48 km at a speed of 40 km/h and another 52 km with a speed of 65 km/h. What is the average speed of the car (in km/h) for the total distance covered?
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A.
52.5
B.
50
C.
52
D.
53
ANSWER :
B. 50
2.
Chord AB and diameter CD of a circle meet at the point P, outside the circle when produced. If PB = 8 cm, AB = 12 cm and the distance of P from the centre of the circle is 18 cm, the radius (in cm) of the circle is closest to:
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A.
12.8
B.
12.4
C.
13
D.
12
ANSWER :
A. 12.8
3.
In a circle with centre O, a 6 cm long chord is at a distance 4 cm from the centre. Find the length of the diameter.
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A.
14 cm
B.
7 cm
C.
5 cm
D.
10 cm
ANSWER :
D. 10 cm
4.
Two trains start at the same time from two stations and proceed towards each other at speeds of 90 km/h and 70 km/h, respectively. When they meet, it is found that one train has travelled 140 km more than the other. What is the distance (in km) between the two stations?
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A.
1100
B.
1120
C.
980
D.
1200
ANSWER :
B. 1120
5.
Two circles touch internally. Their diameters are, respectively, 8 cm and 4 cm. What is the distance (in cm) between their centres?
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A.
3
B.
2
C.
4
D.
1
ANSWER :
B. 2
6.
Ashok completes a journey in 7 hours. He travels the first half of the journey at the speed of 24 km/h and the second half of it at the speed of 32 km/h. The total distance of the journey is:
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A.
190 km
B.
192 km
C.
194 km
D.
188 km
ANSWER :
B. 192 km