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nick1816
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On a long stretch of east-west road, A and B are two points such that 22 May 2019, 07:00
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C
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Difficulty:

25% (medium)

Question Stats:

79% (02:30) correct 21% (02:55) wrong based on 111 sessions

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On a long stretch of east-west road, A and B are two points such that B is 350 km west of A. One car starts from A and another from B at the same time. If they move towards each other, then they meet after 1 hour. If they both move towards east, then they meet in 7 hrs. The difference between their speeds, in km per hour, is

A. 40
B. 45
C. 50
D. 55
E. 60
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C
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bidskamikaze
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On a long stretch of east-west road, A and B are two points such that 22 May 2019, 08:08
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nick1816
On a long stretch of east-west road, A and B are two points such that B is 350 km west of A. One car starts from A and another from B at the same time. If they move towards each other, then they meet after 1 hour. If they both move towards east, then they meet in 7 hrs. The difference between their speeds, in km per hour, is

A. 40
B. 45
C. 50
D. 55
E. 60
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Sa= speed of car that starts @ A; Sb= speed of car that starts B.

We have Sa+Sb=350/1 and
Sb-Sa = 350/7 =50...

We dont need to solve any further :roll:
Answer C
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On a long stretch of east-west road, A and B are two points such that 21 Dec 2024, 11:52
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