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Trains Boats and Streams Practice Test 4 with solutions
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© examsnet.com
Question : 23
Total: 40
Two trains start from a certain place on two parallel tracks in the same direction. The speed of the trains are 45 km/hr and 40 km/hr respectively. The distance between the two trains after 45 minutes will be:
2 km 500 m
2 km 750 m
3 km 750 m
3 km 250 m
Validate
Solution:
Let the distance covered by Train A = 45 kmph
Let the distance covered by Train B = 40 kmph
Time = 45 minutes
=
45
60
=
3
4
hrs.
Distance covered by Train B =
3
4
=
x
40
x =
3
4
×
40
= 30 kms
Distance covered by Train A = 30 + y kms
Speed = 45 km/hr
Time = 45 minutes =
45
60
=
3
4
hrs
3
4
=
30
+
y
45
3
4
×
45
= 30 + y
33.75 - 30 = y
y = 3.75
= 3 km 750 m
© examsnet.com
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