Does anyone know how to do this?

Answer:
71%
Step-by-step explanation:
She has 65% for 1st paper which have 120marks, we can calcule how marks she done:
120*0,65=78
On the 2nd pper she done:
80*0,80=64
The total marks was 120+80=200
She done 78+64=142
200—>100%
142—->x%
X=14200/200=71
Total procent score is 71%