Answer :
to find the multiple-choice questions correct, we must multiply 9/10 by the total,so
[tex]\frac{9}{10}\times30=27[/tex]so, she got 27 multiple-choice questions correct
To find the true/false questions correct, we must multiply 4/5 by the total,so
[tex]\frac{4}{5}\times10=8[/tex]so, she got 8 tru/false questions correct