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RRB NTPC Mains or Stage 2 Model Paper 7 with solutions
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© examsnet.com
Question : 37
Total: 120
The jogging track in a sports complex is 726 metres in circumference. Pradeep and his wife start from the same point and walk in opposite directions at 4.5 km/h and 3.75 km/h, respectively. They will meet for the first time in :
5.5 min
6.0 min
5.28 min
4.9 min
Validate
Solution:
(c) Let the husband and the wife meet after x minutes. 4500 metres are covered by Pradeep in 60 minutes.
In x minutes, he will cover
4500
60
x metres. Similarily,
In x minutes, his wife will cover
3750
60
x m.
Now
,
4500
60
x
+
3750
60
x
=
726
⇒
x
=
726
×
60
8250
=
5.28
m
i
n
© examsnet.com
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