| January 23rd, 2018 02:14 PM | |
| prince karak | Re: gmat quant practice As you are looking for GMAT Quant Practice Questions with answer , so on your demand I am providing same : Practice Questions: Averages 1) There are 17 students in a certain class. On the day the test was given, Taqeesha was absent. The other 16 students took the test, and their average was 77. The next day, Taqeesha took the test, and with her grade included, the new average is 78. What is Taqeesha’s grade on the test? (A) 78 (B) 80 (C) 87 (D) 91 (E) 94 2) A company has 15 managers and 75 associates. The 15 managers have an average salary of $120,000. The 75 associates have an average salary of $30,000. What is the average salary for the company? (A) $35,000 (B) $45,000 (C) $55,000 (D) $65,000 (E) $75,000 Answers and Explanations 1) The average of the first 16 students is 77. This means, the sum of these 16 scores is sum = (average)*(number of scores) = 77*16 = 1232 Once Taqeesha takes her test, the average of all 17 scores is 78. This means, the sum of these 17 scores is: sum = (average)*(number of scores) =78*17 = 1326 Once we had the sum of the 16 scores, all we had to do was add Taqeesha’s score to that total to get the sum of all 17. Therefore, the difference in these two sums is Taqeesha’s score. 1326 – 1232 = 94. Answer: E. 2) The 15 managers have an average salary of $120,000. The sum of their salaries is: sum = (average)*(number of salaries) = $120,000*15 = $1,800,000 The 75 associates have an average salary of $30,000. The sum of their salaries is: sum = (average)*(number of salaries) = $30,000*75 = $2,250,000 When we add those two sums, we get the total payroll of all 90 employees. $1,800,000 + $2,250,000 = $4,050,000 So, we have 90 employees, and together they earn $4,050,000, so the average is average = $4,050,000 ÷90 = $45,000 Answer: B. |
| January 23rd, 2018 02:14 PM | |
| Unregistered | Re: gmat quant practice Hi buddy here I am looking for GMAT Quant Practice Questions with answer , so would you plz provide me same to do practice of this exam ?? |
| November 29th, 2015 09:36 AM | |
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