GMAT and GRE Math - What is 20 of 40 Percent

GMAT and GRE Math - What is 20 of 40 Percent Are you preparing for the GRE or the GMAT? If these timed graduate and business school exams are in your future, heres a short cut for answering percent questions. More specifically, this article focuses on how to easily calculate the percentage of a number. Suppose a question required you to find 40% of 125. Follow these simple steps. Four Steps to Calculate a Percentage Step 1: Memorize these percents and their corresponding fractions. 100% 150% 1/225% 1/433 1/3% 1/320% 1/510% 1/10 Step 2: Choose a percent from the list that fits with the percent in question. For example, if you are looking for 30% of a number, choose 10% (because 10% * 3 30%). In another example, a question requires you to find 40% of 125. Choose 20% since it is half of 40%. Step 3: Divide the number by the denominator of the fraction. Since youve memorized that 20% is 1/5, divide 125 by 5.125/5 2520% of 125 25 Step 4: Scale to the actual percent. If you double 20%, then youll reach 40%.   Therefore, if you double 25, youll find 40% of 125. 25 * 2 50 40% of 125 50 Answers and Explanations Original Worksheet 1. What is 100% of 63?63/1 632. What is 50% of 1296?1296/2 6483. What is 25% of 192?192/4 484. What is 33 1/3% of 810?810/3 2705. What is 20% of 575?575/5 1156. What is 10% of 740?740/10 747. What is 200% of 63?63/1 6363 * 2 1268. What is 150% of 1296?1296/2 648648 * 3 19449. What is 75% of 192?192/4 4848 * 3 14410. What is 66 2/3% of 810?810/3 270270* 2 54011. What is 40% of 575?575/5 115115 * 2 23012.   What is 60% of 575?575/5 115115 * 3 34513. What is 5% of 740?740/10 7474/2 37