The percent of boys in a class was 40%. How many students are there in the class?
Please help with a good and clear explanation!
Please help with a good and clear explanation!
2 Answers
Sep 20, 2017
To answer the question it necessary to know either the number of boys or the number of girls in the class.
Sep 20, 2017
A multiple of
Explanation:
Percent means "per hundred", expressing a proportion.
The proportion of boys in the class is:
#40/100 = (2*color(red)(cancel(color(black)(20))))/(5*color(red)(cancel(color(black)(20)))) = 2/5#
In other words, for every
In order that the figure
Then the number of boys will be the corresponding multiple of
That is about as much as we can deduce from the question as given.