56 first-graders and 24 other students attended a school assembly. What percentage of the students at the assembly were first-graders?

80%

Step-by-step explanation:

We can write the ratio of first graders to students as 56:24.

We have to find the total amount of students so we add those two up and we get 70

Out of 70, there are 56 first graders, so we can write that as a fraction which will be 56/70

To get this to a percent, we have to get it so the denominator is 100, I can do some weird thing, multiplying a decimal over decimal to get to the answer, but that isn't what you would most likely do

The best thing to do in this scenario is to simplify this equation so it has a denominator of 10, so we do divide by 7 on the bottom, divide by 7 on the top, and we get the more simplified fraction, 8/10. And 8/10 is also equal to 80/100 which makes the percent 80%