Question

Giuliana has 22 quarters and dollar coins worth a total of $10.75. Which answer works? 0.1n + 0.05(n – 175) = 13.30
0.1n + 0.05(175 – n) = 13.30
0.1(n – 175) + 0.05 = 13.30
0.1(175 – n) + 0.05n = 13.30

Answer 1

HEEELP

Answer 2

q=# quarters
d=# dollars
n=# coins
n=q+d \(\implies\) q=n-d
q*.25+d*1=10.75
\(\implies\)(n-d)*.25+d=10.75 \(\text{ after substituting}\)
= (22-d)*.25+d=10.75

From which you can find the number of dollars, \(d\)/
Number of quarters then is q=22-d

Not of the equations in your list matches this problem.

Does this make sense?

Answer 3

So it's the second one right?