x = total possible mark
60% = 60 / 100
Proportion:
39 / x = 60 / 100
Cross multiply
39 • 100 = x • 60
3900 = 60 x
x = 3900 / 60 = 65
So if Wei’s mark on a test was 39. This
mark was 60%. What was the total
possible mark?
3 answers
.6x= 39
x = 39/.6 = 65
x = 39/.6 = 65
Thank you both this helps a lot!