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Question

The distance between two cities A and B is 330 km. A train starts from A at 8 a.m. and travels towards B at 60 km/hr. Another train starts from B at 9 a.m. and travels towards A at 75 km/hr. At what time do they meet?

A
10 a.m.
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B
10.30 a.m.
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C
11 a.m.
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D
11.30 a.m.
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Solution

The correct option is C 11 a.m.
Suppose they meet x hrs after 8 a.m.
Then
(Distance moved by first in x hrs) + [Distance moved by second in (x1) hrs] =330
So, 60x+75(x1)=330
x=3
So, they meet at (8+3). i.e 11a.m.

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