theachiever wrote:Randy can run pi metres every 2 seconds.If the circular track has a radius of 75 metres,how long does it take Randy to run twice round the track?
Circumference of the track = 2Ï€r = 2Ï€(75) = 150Ï€.
Twice around the track = 2(150Ï€) = 300Ï€.
Set up a proportion and cross-multiply:
Ï€ meters/2 seconds = 300Ï€ meters/x seconds
xπ = 600π
x = 600 seconds.
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
