Alejandra took five Spanish quizzes and scored a total of 227 points. Nigel took the same quizzes and scored a total of 189. What is the difference between Alejandra’s average score and Nigel’s average score?




_________________

Sandy
If you found this post useful, please let me know by pressing the Kudos Button

Try our free Online GRE Test

We can save a bit of time by recognizing the following fraction property: \(\frac{a}{c}-\frac{b}{c}=\frac{a-b}{c}\)

Here's what I mean:

Alejandra took five Spanish quizzes and scored a total of 227 points.
Alejandra's average = \(\frac{277}{5}\)

Nigel took the same quizzes and scored a total of 189.
Nigel's average = \(\frac{189}{5}\)

What is the difference between Alejandra’s average score and Nigel’s average score?

Difference = \(\frac{277}{5}-\frac{189}{5}\)

\(=\frac{277-189}{5}\) [after we apply the above fraction property]

\(=\frac{88}{5}\)

\(= 7.6\)

ASIDE: The video below shows how to quickly divide by 5 in your head

Answer: 7.6

RELATED VIDEO FROM MY COURSE

_________________

Brent Hanneson – Creator of greenlighttestprep.com
Sign up for my free GRE Question of the Day emails