Question

. Matt got a 90% on his test. If Matt got 36 questions correct, how many questions were on the test? A. 37 B. 46 C. 40 D. 32

Answer 1

90% = 36 questions

100% = x questions

then

`\begin{gathered} 90\cdot x=100\cdot36 \\ 90x=3600 \\ (90x)/(90)=(3600)/(90) \\ x=40 \end{gathered}`

answer: C 40