A man walks at a rate of 10 mph. After every 10 miles, he rests for 6 minutes. How much time does he take to walk 50 miles?
A. 300
B. 318
C. 322
D. 324
E. 330
The OA is D.
I don't have clear this PS question, I appreciate if any expert explain it for me because if he rests for 6 minutes every 10 miles, he should stop to rest 4 times, that's mean 24 minutes, then
For each 10 miles, his time is, (60+6)=66 minutes but for the last 10 miles (40 to 50) will be 60 minutes, finally the total time will be,
66(10 miles)+66(20 miles)+66(30 miles)+66(40 miles)+60(50 miles)=324.
Is it correct my solution? Thank you so much.
A man walks at a rate of 10 mph...
This topic has expert replies
GMAT/MBA Expert
- Brent@GMATPrepNow
- GMAT Instructor
- Posts: 16207
- Joined: Mon Dec 08, 2008 6:26 pm
- Location: Vancouver, BC
- Thanked: 5254 times
- Followed by:1268 members
- GMAT Score:770
- DavidG@VeritasPrep
- Legendary Member
- Posts: 2663
- Joined: Wed Jan 14, 2015 8:25 am
- Location: Boston, MA
- Thanked: 1153 times
- Followed by:128 members
- GMAT Score:770
As Brent noted, your approach is perfectly valid. Alternatively, you could think about it like thisAAPL wrote:A man walks at a rate of 10 mph. After every 10 miles, he rests for 6 minutes. How much time does he take to walk 50 miles?
A. 300
B. 318
C. 322
D. 324
E. 330
The OA is D.
I don't have clear this PS question, I appreciate if any expert explain it for me because if he rests for 6 minutes every 10 miles, he should stop to rest 4 times, that's mean 24 minutes, then
For each 10 miles, his time is, (60+6)=66 minutes but for the last 10 miles (40 to 50) will be 60 minutes, finally the total time will be,
66(10 miles)+66(20 miles)+66(30 miles)+66(40 miles)+60(50 miles)=324.
Is it correct my solution? Thank you so much.
If you're walking at 10mph, it'll take you 5 hours to go 50 miles without stopping. 5 hours =5*60 = 300 minutes.
If you stop every 10 miles, you'll stop 4 times. At 6 minutes of resting per stop, you'll rest a total of 4*6 = 24 minutes.
Total time = 300 + 24 =324. The answer is D
GMAT/MBA Expert
- Scott@TargetTestPrep
- GMAT Instructor
- Posts: 7222
- Joined: Sat Apr 25, 2015 10:56 am
- Location: Los Angeles, CA
- Thanked: 43 times
- Followed by:29 members
Since his rate is 10 mph, it takes him 50/10 = 5 hours, or 300 minutes, to walk 50 miles if there are no breaks. However, since he takes 4 breaks (note that he will not take a break after walking the 5th and final 10-mile distance), he takes a total of 6 x 4 = 24 minutes in breaks, and thus his total time to walk 50 miles is 300 + 24 = 324 minutes.AAPL wrote:A man walks at a rate of 10 mph. After every 10 miles, he rests for 6 minutes. How much time does he take to walk 50 miles?
A. 300
B. 318
C. 322
D. 324
E. 330
Answer: D
Scott Woodbury-Stewart
Founder and CEO
[email protected]
See why Target Test Prep is rated 5 out of 5 stars on BEAT the GMAT. Read our reviews