6.Use a proportion to solve the problem

31% of 70

x/100 = 31/70; 43.66
x/71 = 31/100; 22.01
x/31 = 71/100; 0.22
71/x = 31/100; 229.03

4 answers

None of those answers is correct.
Agree with Ms Sue, I suspect a typo.
All the ratios contain 71 instead of 70

BUT, why do this in such a complicated way, just find
.31(71) = ...
n = 0.31 * 70.
n = 31/100 * 70.
Divide both sides by 70:
n/70 = 31/100 is the required proportion to solve for n.
Sorry for the late reply but those were the answers on the question? If they're wrong, I'm not sure why. I'll see what's wrong and if I can see what's wrong then I'll repost with the right ones.