GMAT Quant

If 3x – 2y = 32 and sqrt (3x) – sqrt (2y) = 4 GMAT

This looks like something where we ought to be able to square the second equation as it stands--but that will…

4 months ago

VIDEO: The function f is defined for each positive 3-digit integer n by GMAT

[latexpage] The function f is defined for each positive three-digit integer n by $f(n) = 2^x 3^y 5^z$, where x,…

4 months ago

VIDEO: Last year all refuse collected by Shelbyville city services was incinerated GMAT

Look at what you're trying to do: reduce the amount of ash by reducing the number of truckloads. Fewer truckloads…

4 months ago

VIDEO: (2 3/5− 1 2/3)/(2/3 – 3/5) GMAT

This is rated hard. Why? Mostly it's picking what to do quickly. First eliminate the mixed numbers, then cancel the…

4 months ago