Question

28 is 35% of what? My brain is literally dead and I can't even solve it.

Answer 1

We set up a proportion: 28/?= 35/100

Cross multiply: 35*?= 28*100
⇒ ?= 28*100/35= 80

28 is 35% of 80.

Answer 2

28 = (35/100)*x; where x represents "what"
2800 = 35*x;
x = 2800 ÷ 35;
x = 80;