The average salary of 15 people in the shipping department at a certain firm is $20,000. The salary of 5 of the

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by BTGmoderatorLU » Wed Jan 26, 2022 4:33 pm

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Source: Official Guide

The average salary of 15 people in the shipping department at a certain firm is $20,000. The salary of 5 of the employees is $25,000 each and the salary of 4 of the employees is $16,000 each. What is the average salary of the remaining employees?

A. $19,250
B. $18,500
C. $18,000
D. $15,850
E. $12,300

The OA is B

Source: Beat The GMAT — Problem Solving | Wed Jan 26, 2022 4:33 pm

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Re: The average salary of 15 people in the shipping department at a certain firm is $20,000. The salary of 5 of the

by Brent@GMATPrepNow » Thu Jan 27, 2022 6:42 am

BTGmoderatorLU wrote: ↑
Wed Jan 26, 2022 4:33 pm
Source: Official Guide

The average salary of 15 people in the shipping department at a certain firm is $20,000. The salary of 5 of the employees is $25,000 each and the salary of 4 of the employees is $16,000 each. What is the average salary of the remaining employees?

A. $19,250
B. $18,500
C. $18,000
D. $15,850
E. $12,300

The OA is B

]The average salary of 15 people in the shipping department at a certain firm is $20,000
So, (sum of all 15 salaries)/15 = $20,000
Multiply both sides by 15 to get: sum of all 15 salaries = $300,000

The salary of 5 of the employees is $25,000 each and the salary of 4 of the employees is $16,000 each
5 x $25,000 = $125,000
4 x $16,000 = $64,000
$125,000 + $64,000 = $189,000

So, the 9 people accounted for here have a combined salary of $189,000

What is the average salary of the remaining employees?
sum of all 15 salaries = $300,000
sum of 9 of the salaries = $189,000

$300,000 - $189,000 = $111,000
So, the remaining 6 people must have a combined salary of $111,000

Average salary of 6 people = $111,000/6 = $18,500

Answer: B

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