Out of 30 problems on a test, Jose got 4 wrong What percentage did Jose get correct?

1 Answer
Nov 3, 2016

Answer:

Jose got #86.7%# of the problems correct.

Explanation:

Percentage means "per 100" or "out of 100" so we can write this problem as:

#(30 - 4)/30 = x/100#: Using #(30 - 4)# because the question is about the percentage correct and to get the percentage correct you need to know the number correct not the number wrong (#4#).

#26/30 = x/100#

#(100*26)/30 = x#

#2600/30 = x#

#x = 86.7#