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Sarah and James are running around a circular track. Sa

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Re: Sarah and James are running around a circular track. Sa [#permalink]
relative distance ; 80+40 ; 120 feet
relative speed ; 1200-800 ; 400 ft/min
time 120/400 ; .3*60 ; 18 sec
IMO C

Jazzmin wrote:
Sarah and James are running around a circular track. Sarah runs at a constant speed of 800 feet/minute and James runs at a constant speed of 1200 feet/minute. James is currently 80 feet behind Sarah, how many seconds will it take James to catch up to Sarah and run 40 feet ahead of her?

A. 5 Seconds

B. 10 Seconds

C. 18 Seconds

D. 40 Seconds

E. 50 Seconds
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Re: Sarah and James are running around a circular track. Sa [#permalink]
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Re: Sarah and James are running around a circular track. Sa [#permalink]
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