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2 votes
2 votes
A student earns an 80% on their science test. If she got 20 questions correct, how many total were on the test?

User Wildaker
by
3.0k points

2 Answers

8 votes
8 votes

Answer:

25.

Explanation:

By proportion it is

(100/80) * 20

= 1.25 * 20

= 25.

User Calcazar
by
3.2k points
20 votes
20 votes

Answer:

25 questions

Explanation:

20 questions = 80% If she got 80%, that means she got 20 questions correct.

5 questions = 20% Here, we simply just divide by 4 to give us 20%.

25 questions = 100% The total of the test would of course equal 100%, so we just multiply by 5 to give the total questions.

I hope this helps you!! ^-^

User Sebastian Serrano
by
2.9k points