Easiest way to approach this is to remember the percentage proportion equation. Part/Total= percentage/100.
With that in mind just plug in to the equation and find what you're missing. In this case it would be 18/x (because you are trying to find the total amount of questions) = 90/100. Solve for X and you got your answer.
Answers & Comments
Step-by-step explanation:
Easiest way to approach this is to remember the percentage proportion equation. Part/Total= percentage/100.
With that in mind just plug in to the equation and find what you're missing. In this case it would be 18/x (because you are trying to find the total amount of questions) = 90/100. Solve for X and you got your answer.
18/x=90/100
18/x=.90
x=18/.90
x=20
Therefore the exam has 20 questions.
Answer:
4 items
Step-by-step explanation:
90% of 40 is 36...
Pa brainliest po kung nakatulong plsss.