Answer:
C. $750
Step-by-step explanation:
With the given information in the problem, setting up a proportion with equivalent ratios (fractions) would be a good way to solve for the missing variable, or the amount that was in Mrs. Manning's savings account last month . Since we know that her current balance of $1170 is 156% of what she had last month we can set up the following proportion:
[tex]\frac{156}{100}=\frac{1170}{x}[/tex] where 'x' is the amount from her savings last month, which would represent 100%.
Using cross-multiplication and division, we can solve for 'x':
(1170)(100) = 156x or 117000 = 156x
Divide both sides by 156: [tex]\frac{117000}{156}=\frac{156x}{156}[/tex]
Solve for 'x': x = $750 which is the amount in her last month's savings.
