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RRB NTPC Mains or Stage 2 Model Paper 9 with solutions
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© examsnet.com
Question : 8
Total: 120
A man walks half of the journey at 4 km/h by cycle does one third of journey at 12 km/h and rides the remainder journey in a horse cart at 9 km/h, thus completing the whole journey in 6 hours and 12 minutes. The length of the journey is
36 km
39 km
40 km
28 km
Validate
Solution:
(a) Let the length of the journey =x km.
∴ Journey rides by horse cart
=
x
[
1
−
1
2
−
1
3
]
=
1
6
X
km.
Then, total time taken to complete journey
31
5
hr
⇒
t
1
+
t
2
+
t
3
=
31
5
⇒
x
2
×
1
4
+
x
3
×
1
12
+
x
6
×
9
=
31
5
⇒
x
=
31
5
×
216
37
=
36.2
k
m
≈
36
k
m
© examsnet.com
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