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# A car travelled 75% of the way from town X to town Y at a

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Senior Manager
Joined: 17 May 2005
Posts: 270

Kudos [?]: 17 [0], given: 0

Location: Auckland, New Zealand
A car travelled 75% of the way from town X to town Y at a [#permalink]

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04 Jun 2005, 15:57
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

A car travelled 75% of the way from town X to town Y at a constant speed of 50 miles per hour. What average speed was maintained by the car for the remaining journey if the average speed for the entire journey was 40 miles per hour?

A) 25mph
B) 50mph
C) 20mph
D) 37.5mph
E) the data given above is insufficient to calculate the answer

Kudos [?]: 17 [0], given: 0

Director
Joined: 07 Jun 2004
Posts: 610

Kudos [?]: 921 [0], given: 22

Location: PA

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04 Jun 2005, 17:27
none of the abovr but the answer will be 47.05mph

Kudos [?]: 921 [0], given: 22

Director
Joined: 18 Apr 2005
Posts: 543

Kudos [?]: 37 [0], given: 0

Location: Canuckland

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04 Jun 2005, 18:47
cloudz9 wrote:
A car travelled 75% of the way from town X to town Y at a constant speed of 50 miles per hour. What average speed was maintained by the car for the remaining journey if the average speed for the entire journey was 40 miles per hour?

A) 25mph
B) 50mph
C) 20mph
D) 37.5mph
E) the data given above is insufficient to calculate the answer

1/(3/(4*50) + 1/(4*x)) = 40

my guess it should be A) 25

Kudos [?]: 37 [0], given: 0

Senior Manager
Joined: 19 Feb 2005
Posts: 486

Kudos [?]: 25 [0], given: 0

Location: Milan Italy

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05 Jun 2005, 03:41
0.25/x+0.75/50=1/40

25 it is

Kudos [?]: 25 [0], given: 0

05 Jun 2005, 03:41
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