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
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.
To use a proportion to solve the problem, we can set up a proportion using the given information.
For example:
Let x be the number we are trying to find.
31% can be written as 31/100 in decimal form.
The proportion can be set up as:
x/100 = 31/70
To solve for x, we can cross multiply and then solve for x:
70x = 100 * 31
70x = 3100
x = 3100/70
x = 44.28
Therefore, 31% of 70 is approximately 44.28.