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IBPS PO Prelims Model Paper 11
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© examsnet.com
Question : 51
Total: 100
To reach a point B at 10 am from point A, Abhinav travels at an average speed of 15 kmph. He reaches the point B at 12 noon, if he travels at an average speed of 10 kmph. Find the average speed of Abhinav if he intends to reach the point B at 9 am ? (in kmph)
15
2
7
17
1
7
13
2
7
17
2
7
None of these
Validate
Solution:
Let the distance between point A and point B be x km.
Difference of time = 2 hours
∴
x
12
−
x
15
=
2
⇒
5
x
−
4
x
60
=
2
⇒
x
60
=
2
⇒
x
=
120
km
∴ Time taken at 15 kmph to cover 120 km =
120
15
= 8 hours
∴ Required speed to cover 120 km at 9 am i.e in 7 hours
=
120
7
=
17
1
7
kmph.
© examsnet.com
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