Latest CTS Aptitude Question SOLUTION: 4 men can cross a bridge in 3,7,13, 17 minutes. Only two can cross the bridge at a time. The time taken by the two to cross the bridge is equal to the time taken by the slowest pe

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(#M40007322) CTS Logical Reasoning question Number problem Keep an EYE

4 men can cross a bridge in 3,7,13, 17 minutes. Only two can cross the bridge at a time. The time taken by the two to cross the bridge is equal to the time taken by the slowest person of the two. Find the minimum time to all of them cross the bridge.

Asked In CTS (12 years ago)

Unsolved Read Solution (5)

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Pravallika   (9 years ago)

First 17 and 7 going so that 7 will reach in 7 min remain 10
Now 13 and 17 is going so that 17 I will reach in 10 min remain 3
Now 13 and 3 is going so that both reached in 3 min. so total min to reach is 7+10+3=20

Is this solution Helpfull? Yes (9) | No (1)  

Pargat Pal Singh  (12 years ago)

4 men can cross a bridge in 3,7,13, 17 minutes. Only two can cross the bridge at a time.

3+7 cross in 7 mins...............total 7 mins so far
3 min person comes back......... 10 mins.
13+17 cross bridge in 17 min..............27 mins.
7 min person comes back in 7 min..... 34 mins
3+7 cross bridge in 7 mins............ 41 mins total

Is this solution Helpfull? Yes (2) | No (21)  

vishal  (10 years ago)

answer is 24 as 1st time (3,7) pass so time is 7
2nd time (13,17) will pass so time is 17
so 7+17=24

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niranjan  (8 years ago)

20 minute

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BRINDHA P  (8 years ago)

Answer is 47

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