Peter answered 86% of a 50-question test correctly. How many correct answers did he give? How many answers were incorrect?

Question

Solve the Question:

Answer 1

86% may be written as (86/100) or as 0.86.

 

Since "it's a ratio (sic.) problem," then:

                  86/100 = correct/50

                 correct = (86/100)*50       (multiply both sides by 50)

                 correct = 43

And, 50-43 = 7 incorrect.

Answer 2

Well, if it were an 100-point test Peter would have answered 86 questions correctly. Therefore logic tells us that on a 50-point test, Peter would have answered half of these questions correctly, or, 43. This leaves 7 incorrect answers.

Answer 3

we need to find 86% of 50

 

(86/100)(50) = 86/2 = 43

He answered 43 questions correct out of 50

leaving 7 incorrect.