Joe's current weekly caloric intake is 20,000 calories. His physician has advised Joe to reduce the number of calories he consumes weekly to 14,000. By what percent does Joe need to reduce his weekly caloric intake?  Choose the correct choice from the following:  A) 20%  B) 30%  C) 50%  D) 60%  E) 70%
A certain percentage of questions in the Quant section of the GMAT are just 'math questions' - you'll use a formula, do some calculations and you'll have the answer. This is one of those types of questions. You still have to write everything down and stay organized, but the work involved is relatively straight-forward.   Here, we're told that the original amount of calories is 20,000 and that the reduced amount of calories is 14,000. We're asked what PERCENT should the original amount of calories be REDUCED BY?   Original Calories= 20,000   Reduced Calories = 14,000   The percent of reduced calories is relative to the original calories as shown:   14,000/20,000 = 7/10 = 70%. So, 14,000 calories is 70% of 20,000 calories (100%). But the question is BY what PERCENT should the original amount of calories be REDUCED. 100% - 70% = 30%.   30%
<result>B</result>
Joe's current weekly caloric intake is 20,000 calories. His physician has advised Joe to reduce the number of calories he consumes weekly to 14,000. By what percent does Joe need to reduce his weekly caloric intake?