Justin got 85% op the questions correct on his math exam. IA there were 60 questions, how many did he get correct?

1 Answer
Jan 11, 2017

Justin had 51 out 60 questions correct.


We can rewrite this problem as:

What is 85% of 60?

"Percent" or "%" means "out of 100" or "per 100", Therefore 85% can be written as #85/100#.

When dealing with percents the word "of" means "times" or "to multiply".

Finally, lets call the number of correct answers we are looking for "c".

Putting this altogether we can write this equation and solve for #c# while keeping the equation balanced:

#c = 85/100 xx 60#

#c = 5100/100#

#c = 51#