Answer:
80%
Step-by-step explanation:
First we find the percentage she got wrong:
[tex]\frac{18}{90}[/tex] Is the fraction she got wrong, now we convert this into a percentage by divding 18 by 90 and multiplying by 100
18÷90×100=20
so to find the remaining percent we subtract 20 from 100
100-20=80
And our answer is 80
