Respuesta :
Answer:
Marci answered five more questions correctly
Step-by-step explanation:
40/50 questions would result in 80% correct.
So, 90% correct would mean 45/50 questions were answered correctly.
Answer:
10
Step-by-step explanation:
So basically Donnovan got 80 put of 100 and that equals 80% so 90%-80% is 10%