63 first-graders and 21 other students attended a school assembly. What percentage of the

Mathematics

2 answers:

boyakko [2]2 years ago

4 0

Answer:

75%

Step-by-step explanation:

alexira [117]2 years ago

3 0

Answer:

75%

Step-by-step explanation:

First let's start by finding the total number of students at the assembly:

63+21=84

Then we find the percentage of the students that were first-graders.

63/84=9/12=3/4=75/100=75%

As further explanation to how this works:

We take the number of first graders over the total number of students so we can find the percentage. Then we simplify it down to 3/4. Since percentages are out of 100 we can change the fraction so it's something out of 100. We multiply the numerator and denominator by 25 (since 100/4=25) and we get 75/100 which is 75%

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mart [117]

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