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Trains Boats and Streams Practice Test 2 with solutions
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© examsnet.com
Question : 26
Total: 40
Pashim Express crosses a bridge in 4 seconds and a 100 m long bridge in 12 seconds. Find the length of the train.
25 m
20 m
22 m
30 m
35 m
Validate
Solution:
Let the speed of the train = x m/second and length be y m
Time =
Distance
Speed
4 =
y
x
⇒ y = 4x ......(i)
When time is equal to 12 seconds,
12 =
y
+
100
x
12x = y + 100
Using (i) we get
12x = 4x + 100
8x = 100
x =
100
8
=
25
4
= 6.25 m/seconds
y = 4 (6.25) = 25 m
© examsnet.com
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