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You scored 52,5% for a test. If you got 42 marks, what was the test out of? pls help​

User Cprn
by
8.5k points

2 Answers

4 votes

total marks = 80

-------------------------------------------------------------------------------------------------------------Explanation:
To find the total marks for the test, you can use the following proportion:

percentage score = (marks obtained / total marks) x 100%

Substituting the given values:

52.5% = (42 / total marks) x 100%

Dividing both sides by 52.5:

1 = (42 / total marks) / 0.525

Simplifying:

total marks = 42 / (1/0.525)

total marks = 80

Therefore, the test was out of 80 marks.

User Gorill
by
9.2k points
2 votes

Answer: 80 marks

Explanation:

If 52.5% of the test was 42 marks, we need to find what 100% is. To do this, we can create a proportion.


\displaystyle (52.5)/(42) =(100)/(x)

Next, we can cross-multiply.


\displaystyle x*52.5=100*42


\displaystyle 52.5x=4,200

Divide both sides of the equation by 52.5:


\displaystyle x=80

There are 80 marks on the test.

User Xverges
by
8.0k points

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