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EPFO 2017 English Medium Solved Paper
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© examsnet.com
Question : 113
Total: 121
Two vehicles A and B travel with uniform speed 30 km/h and 60 km/h respectively in the same direction. They start at the same time and from the same place for a distance of 120 km. The faster vehicle B reaches the destination and travels back with same speed. Assume that the loss of time to change the direction is negligible. If
x
is the distance travelled by the slower vehicle A before the two vehicles cross each other, then
x
is
70 km
75 km
80 km
90 km
Validate
Solution:
Given,
Time take by vehicle B to cover 120 km distance=
120
60
=
2
h
Distance covered by vehicle A in 2h
speed ×time =30×2
=60km
If both vehicle meet at poin P
So.
60
+
y
30
=
120
+
60
−
y
60
[
∴
t
i
m
e
=
distance
speed
]
⇒
120
+
2
y
=
180
−
y
3
y
=
60
∴
y
=
20
Hence
distance
covered
by
vehicle
A
=
x
=
60
+
20
=
80
km
© examsnet.com
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