A motorcycle stunts man belonging to a fair, rides over the vertical walls of a circular well at an average speed of 54 kph for 5 minutes. If the radius of the well is 5 meters then the distance traveled is:
1. 2.5 kms
2. 3.5 kms
3. 4.5 kms
4. 5.5 kms
5. None of the above
a question from gmat.............
This topic has expert replies
-
- Junior | Next Rank: 30 Posts
- Posts: 17
- Joined: Tue Aug 24, 2010 4:51 am
- Location: Sydney, Australia
- Thanked: 1 times
At an average speed of 54 kph after travelling for 5 min
The stuntman would have travelled: 5/60 x 54 km = 4.5 km
Answer is (3)
The stuntman would have travelled: 5/60 x 54 km = 4.5 km
Answer is (3)
- Maciek
- Master | Next Rank: 500 Posts
- Posts: 164
- Joined: Sun Jul 18, 2010 5:26 am
- Thanked: 49 times
- Followed by:4 members
- GMAT Score:710
Hi all!
The task here is to avoid unnecessary calculations.
We don't need information about radius of the well.
We simply need to use formula for speed, which is v = s/t.
s = ?
v = 54 kmph
t = 5min = 5/60 h
s = v*t = 54*5/60 = 4.5 km
Therefore, correct answer is 3.
Hope it helps!
Best,
Maciek
The task here is to avoid unnecessary calculations.
We don't need information about radius of the well.
We simply need to use formula for speed, which is v = s/t.
s = ?
v = 54 kmph
t = 5min = 5/60 h
s = v*t = 54*5/60 = 4.5 km
Therefore, correct answer is 3.
Hope it helps!
Best,
Maciek
"There is no greater wealth in a nation than that of being made up of learned citizens." Pope John Paul II
if you have any questions, send me a private message!
should you find this post useful, please click on "thanks" button
if you have any questions, send me a private message!
should you find this post useful, please click on "thanks" button
- reply2spg
- Legendary Member
- Posts: 1261
- Joined: Sun Sep 14, 2008 3:46 am
- Thanked: 27 times
- GMAT Score:570
What do you mean by, question from GMAT. If this is real test question then remove it asap.
Just FYI - Posting real questions is against the policy of GMAC and if you get caught then you might end up with sever penalty
Just FYI - Posting real questions is against the policy of GMAC and if you get caught then you might end up with sever penalty
Sudhanshu
(have lot of things to learn from all of you)
(have lot of things to learn from all of you)