The distance between two stations is 100 KM. 2 cars start from A and B stations at the same time wit

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29 Oct 2011 difference between meeting

The distance between two stations is 100 KM. 2 cars start from A and B stations at the same time with speeds 48 KM/H and 64 KM/H and returned to the initial station. The time gap between their two meetings will be

OPtion

1) 20/7 Hours
2) 25/22
3) 25/8
4) 25/14
5) 200/7
6) 100/7
7) 24/5
8) 25/18
9) 20/3
10) NONE OF THESE

Solution

Total distance covered between their meetings is 200 KM combined
total combined speed = 64+48 = 112
Time take to cover 200KM with 112 KM/H speed is
200/112
=25/ 14 Hour

Correct Option: 4 Best Solution (2)

Dr.Dipin Singh   13 years AGO

Two cars will meet first when they together travel 100 kms after time 100/(48+64) = 100/112 hrs

Two cars will meet second time when they together travel 300 kms after time 300/(48+64) = 300/112 hrs

Difference in two timings = 300/112 - 100/112= 200/112 = 25/14 hrs ... option 4

Like? Yes (13) | No   

CHANDAN KR SINGH   13 years AGO

ANSWER: 4

SOLUTION:

Relative speed 48 + 64 = 112 KMPH
Distance covered between two meets = 200 KM
Time = 200/112 = 25/14 Hrs.

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