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smclean23: Master | Next Rank: 500 Posts; Posts: 172; Joined: Mon Jun 23, 2008 12:00 pm; Thanked: 3 times; Followed by:1 members

by smclean23 » Sun Jul 06, 2008 1:58 pm

If Jack walked 5 miles in 1 hour and 15 minutes, what was his rate of walking in miles per hour?
(A) 4
(B) 4.5
(C) 6
(D) 6.25
(E) 15

Source: Beat The GMAT — Problem Solving | Sun Jul 06, 2008 1:58 pm

onesome: Junior | Next Rank: 30 Posts; Posts: 18; Joined: Fri May 23, 2008 6:45 am

by onesome » Sun Jul 06, 2008 2:52 pm

1hr 15 mins = 1 + 1/4 hours = 5/4 hours

Distance covered in 5/4 = 5
in 1 = (5/(5/4)) * 1 = 4

Should be A ?

smclean23: Master | Next Rank: 500 Posts; Posts: 172; Joined: Mon Jun 23, 2008 12:00 pm; Thanked: 3 times; Followed by:1 members

by smclean23 » Sun Jul 06, 2008 3:09 pm

correct.

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