showbiz wrote:You get up in the morning at 5:25 Am and start solving math questions at 30q/hr. Your friend gets up at 6:15 and starts solving at 40q/hr. At what time will your friend catch up?
[spoiler]8:45[/spoiler]
From 5:25am to 6:15am, the number of questions answers by you in 5/6 of an hour = r*t = 30*(5/6) = 25.
The CATCH-UP rate is equal to the DIFFERENCE between the two rates:
40-30 = 10 questions per hour.
Time for your friend to catch-up by 25 questions = w/r = 25/10 = 2.5 hours.
Since your friend starts at 6:15am, the time at which your friend catches up = 6:15 + 2.5 hours = 8:45am.
Private tutor exclusively for the GMAT and GRE, with over 20 years of experience.
Followed here and elsewhere by over 1900 test-takers.
I have worked with students based in the US, Australia, Taiwan, China, Tajikistan, Kuwait, Saudi Arabia -- a long list of countries.
My students have been admitted to HBS, CBS, Tuck, Yale, Stern, Fuqua -- a long list of top programs.
As a tutor, I don't simply teach you how I would approach problems.
I unlock the best way for YOU to solve problems.
For more information, please email me (Mitch Hunt) at
[email protected].
Student Review #1
Student Review #2
Student Review #3
