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# Bruno and Sacha are running in the same direction around a stadium. Sa

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Math Expert
Joined: 02 Sep 2009
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Bruno and Sacha are running in the same direction around a stadium. Sa  [#permalink]

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19 Dec 2019, 03:22
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Difficulty:

35% (medium)

Question Stats:

75% (01:47) correct 25% (01:43) wrong based on 114 sessions

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Bruno and Sacha are running in the same direction around a stadium. Sacha runs at a constant speed of 6 meters per second, and Bruno runs at a constant speed of 5 meters per second. At a certain point Sacha overtakes Bruno. If one minute afterward, Sacha stops and waits for Bruno to reach him, then how many seconds does he have to wait?

A. 12
B. 24
C. 36
D. 60
E. 72

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Posts: 48
Re: Bruno and Sacha are running in the same direction around a stadium. Sa  [#permalink]

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19 Dec 2019, 06:06
Difference is 1 meter per second * 60
60/5=12

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Re: Bruno and Sacha are running in the same direction around a stadium. Sa  [#permalink]

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19 Dec 2019, 10:04
relative speed= 1 mps
so in 60 sec d = 60
and B will take = 60/5 ; 12 sec
IMO A

Bunuel wrote:
Bruno and Sacha are running in the same direction around a stadium. Sacha runs at a constant speed of 6 meters per second, and Bruno runs at a constant speed of 5 meters per second. At a certain point Sacha overtakes Bruno. If one minute afterward, Sacha stops and waits for Bruno to reach him, then how many seconds does he have to wait?

A. 12
B. 24
C. 36
D. 60
E. 72
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Joined: 20 Aug 2017
Posts: 113
Bruno and Sacha are running in the same direction around a stadium. Sa  [#permalink]

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22 Dec 2019, 23:44
In one minute Sacha will cover a distance of 60 m.
It will take Bruno $$\frac{60}{5}$$ = 12 seconds to cover 60m.

OA - A

Bunuel wrote:
Bruno and Sacha are running in the same direction around a stadium. Sacha runs at a constant speed of 6 meters per second, and Bruno runs at a constant speed of 5 meters per second. At a certain point Sacha overtakes Bruno. If one minute afterward, Sacha stops and waits for Bruno to reach him, then how many seconds does he have to wait?

A. 12
B. 24
C. 36
D. 60
E. 72
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Re: Bruno and Sacha are running in the same direction around a stadium. Sa  [#permalink]

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26 Dec 2019, 20:12
Bunuel wrote:
Bruno and Sacha are running in the same direction around a stadium. Sacha runs at a constant speed of 6 meters per second, and Bruno runs at a constant speed of 5 meters per second. At a certain point Sacha overtakes Bruno. If one minute afterward, Sacha stops and waits for Bruno to reach him, then how many seconds does he have to wait?

A. 12
B. 24
C. 36
D. 60
E. 72

In 1 minute, Sacha runs 6 x 60 = 360 meters, and Bruno runs 5 x 60 = 300 meters. The difference in distance is 60 meters, so Sacha has to wait 60/5 = 12 seconds for Bruno to catch up with him.

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# Scott Woodbury-Stewart

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Re: Bruno and Sacha are running in the same direction around a stadium. Sa  [#permalink]

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05 Jan 2020, 08:51
This question should be in the Speed/Rate section and not in the work/rate section. Please change
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Re: Bruno and Sacha are running in the same direction around a stadium. Sa  [#permalink]

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02 Apr 2020, 10:05
Bunuel wrote:
Bruno and Sacha are running in the same direction around a stadium. Sacha runs at a constant speed of 6 meters per second, and Bruno runs at a constant speed of 5 meters per second. At a certain point Sacha overtakes Bruno. If one minute afterward, Sacha stops and waits for Bruno to reach him, then how many seconds does he have to wait?

A. 12
B. 24
C. 36
D. 60
E. 72

In the one minute after Sasha overtakes Bruno, Bruno runs a distance of 5 x 60 = 300 meters, and Sacha runs 6 x 60 = 360 meters. So the distance between the two runners is 360 - 300 = 60 meters.

Thus, it takes Bruno 60/5 = 12 seconds to catch up to Sasha.

_________________

# Scott Woodbury-Stewart

Founder and CEO

Scott@TargetTestPrep.com
202 Reviews

5-star rated online GMAT quant
self study course

See why Target Test Prep is the top rated GMAT quant course on GMAT Club. Read Our Reviews

If you find one of my posts helpful, please take a moment to click on the "Kudos" button.

Re: Bruno and Sacha are running in the same direction around a stadium. Sa   [#permalink] 02 Apr 2020, 10:05