Answer:
Her math average would be 73.75%.
Step-by-step explanation:
Add all of her grades together then divide by the number of grades you added together.
So, 60+70+100+60+80+100+100+20= 590. You would take the 590 and divide it by 8 which gives you 73.75. You would then just slap on a percentage sign and you're good to go!