Скачать или смотреть Additive vs Multiplicative Transformation on a Standard Deviation or Diff: Quant Reasoning AMA

Join Avi live for his interactive Ask-Me-Anything Zoom session every Saturday. Start your free trial now at https://www.quantreasoning.com

Subscribe for more GMAT Quantitative Reasoning tips: https://www.youtube.com/QuantReasonin...

0:00 Intro

0:30 Temperature on the Celsius scale (C) is related to temperature on the Fahrenheit scale (F) by the formula C=(5/9)(F—32). What is the difference between a certain pair of temperatures on the Celsius scale?
(1) The difference between the temperatures on the Fahrenheit scale is 45°.
(2) The greater of the two temperatures is 30° on the Celsius scale.

6:52 Standard Deviation Insights

9:30 Jason's salary and Karen's salary were each p percent greater in 1998 than in 1995. What is the value of p?
(1) In 1995 Karen's salary was $2,000 greater than Jason's.
(2) In 1998 Karen's salary was $2,440 greater than Jason's.

14:40 A clothing store's revenue last May was 6 percent less than its revenue last April. The store's revenue last May was greater than its expenses last May, and the store's revenue last April was greater than its expenses last April. Was the stores gross profit last May less than its gross profit last April?
(1) The stores revenue last May was $2,400 less than its revenue last April.
(2) The stores expenses last May were 4 percent less than its expenses last April.

23:48 N and M are each 3-digit integers. Each of the numbers 1, 2, 3, 6, 7, and 8 is a digit of either N or M. What is the smallest possible positive difference between N and M?

Avi Gutman doesn't believe in tips and tricks or mindless textbook math procedures, which tend to cause panic, anxiety and mistakes. Learn more at https://www.quantreasoning.com

Add me on LinkedIn:   / avigutman  

Follow me on Social Media:
INSTAGRAM ‣   / quantreasoning  
FACEBOOK ‣   / quantreasoning  
TWITTER ‣   / quantreasoning