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# Just wanted to refresh ..have not touched rate, time,

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CEO
Joined: 15 Aug 2003
Posts: 3452

Kudos [?]: 928 [0], given: 781

Just wanted to refresh ..have not touched rate, time, [#permalink]

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19 Sep 2003, 07:28
00:00

Difficulty:

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Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions

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Just wanted to refresh ..have not touched rate, time, distance since forever

Walk rate = 4mph, Run rate = 6mph, whats the average speed of walking 5 mile and run 3 mile

(5+3)/(5/4+3/6)

Kudos [?]: 928 [0], given: 781

Manager
Joined: 15 Sep 2003
Posts: 73

Kudos [?]: 11 [0], given: 0

Location: california

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22 Sep 2003, 08:28
yes it is correct....

the formula is:

total distance/total time=Rate

total distance is 5+3= 8 miles

and the total time is Distance/Rate for each activity:
5/4+3/6

remember D=R*T

so it is: 8/(5/4+3/6)

thanks for the refresher!!

Kudos [?]: 11 [0], given: 0

22 Sep 2003, 08:28
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