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Old November 29th, 2015, 09:36 AM
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Default GMAT Quant Practice

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Old January 23rd, 2018, 02:14 PM
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Default 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 ??
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Old January 23rd, 2018, 02:14 PM
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Default 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.
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