A student gets 18 questions correct on a test of 20 questions. What percentage of questions did the student answer correctly?

Question

Quizplus · Accepted Answer

We can use the percent formula to solve. The percent formula is below: ^part⁄_whole = ^%⁄₁₀₀ We are given the part (the 18 correct answers) and the whole (the 20 total questions on the test), and asked to calculate the percent. We don't know the percent, so that is where we will put our variable (x): ^part⁄_whole = ^%⁄₁₀₀ ¹⁸⁄₂₀ = ^x⁄₁₀₀ Cross multiply and solve for x: ¹⁸⁄₂₀ = ^x⁄₁₀₀ 20 * x = 18 * 100 20x = 1800 20x/20 = 1800/20 x = 90 So, 18 is 90% of 20

A Student Gets 18 Questions Correct on a Test of 20