Real GMAT question

[farooq]

Q Harry started a 6-mile hike with a full 10-cup canteen of water and finished the hike in 2 hours with 1 cup of water remaining in the canteen. If the canteen leaked at the rate of 1 cup per hour and Harry drank 3 cups of water during the last mile, how many cups did he drink per mile during the first 5 miles of the hike?

A. 4/5
B. 5/6
C. 1
D. 6/5
E. 5/4


[spoiler]OA : A[/spoiler]

Please explain the solution of this question. Thanks.

[Kalvin]

Q Harry started a 6-mile hike with a full 10-cup canteen of water and finished the hike in 2 hours with 1 cup of water remaining in the canteen. If the canteen leaked at the rate of 1 cup per hour and Harry drank 3 cups of water during the last mile, how many cups did he drink per mile during the first 5 miles of the hike?

A. 4/5
B. 5/6
C. 1
D. 6/5
E. 5/4


[spoiler]OA : A[/spoiler]

Please explain the solution of this question. Thanks.

1 = left in canteen
2 = canteen leaked over 2 hours
3 = drank during mile 6
4 = drank during miles 1 - 5
------------------------------------------
10 cups total

4 cups / 5 miles = 4/5 cups per mile

[grockit_jake]

10 cups total
3 drank in 6th mile
2 cups leaked in 2 hours
1 left in canteen
4 remaining cups that were drank in first 5 miles

4 cups in 5 miles = 4/5 cups/mile