Hi guys,
Can anyone tell me what the "Rate" of the 2nd ant is that is heading west?
Is it 7/3 inch per sec or 8/3 inch per second and why?
thanks
Rate?
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The second ant is moving at a rate of 8/3 inch per second. The first ant's rate is 2 inches per second, which can be represented as 6/3 per second. 6/3 x 1 = 6/3, and 6/3 x 1/3 = 2/3. 6/3 + 2/3 = 8/3.amirp wrote:Hi guys,
Can anyone tell me what the "Rate" of the 2nd ant is that is heading west?
Is it 7/3 inch per sec or 8/3 inch per second and why?
thanks
You don't really need to deal with fractions to answer this, though; you can figure out pretty easily that the first ant moves 12 inches in 6 seconds, and 12 x 4/3 = 16. The legs of the triangle are therefore 12 and 16, and the hypotenuse is 20 inches, or 1 2/3 (1.67) feet.
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1/3 faster means 4/3 of the other ant's rate: 4/3 * 2 = 8/3.amirp wrote:Hi guys,
Can anyone tell me what the "Rate" of the 2nd ant is that is heading west?
Is it 7/3 inch per sec or 8/3 inch per second and why?
thanks
1/3 of an inch faster would mean 1/3 inch more per second than the other ant: 2 + 1/3 = 7/3.
Is the distinction clear?
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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].
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