Question

Cayce scored 68 out of 80 on her last math quiz. what was her grade as a percent

Answer 1

Ok well to solve this problem we can simply use the part over whole strategy
so… 68/80 is equal to x/100
x being the variable we need `to find out… 
to do so we must multiply 68 by 100 (cross multiplication) our answer would be 6800 
now we must divide 6800 by the remaining number (80) 
6800 divided by 80 is 85
Cayces score is 85/100

Answer 2

$68/80=.85 \\ .85*100=85%$
So,she had 85% as a score.