Dwayne answered 80% of the questions on a quiz correctly. If he answered 40 questions correctly what was the total number of questions on Dwayne’s quiz

Hello! 
Dwayne would've had 50 total questions on the test if he got an 80% with 40 correct answers. (40/50 = .8, .8 x 100 = 80)

Hope this helped and good luck!