SOLUTION: A jar of dimes and quarters contains $15.25. There are 103 coins in all. How many of each are there?

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Question 190990This question is from textbook Algebra 1
: A jar of dimes and quarters contains $15.25. There are 103 coins in all. How many of each are there? This question is from textbook Algebra 1

Answer by Mathtut(3670) About Me  (Show Source):
You can put this solution on YOUR website!
let d and q be th amount of dimes and quarters
:
d+q=103..........eq 1
.1d+.25q=15.25...eq 2
:
rewrite eq 1 to d=103-q and plug it into eq 2
:
.1(103-q)+.25q=15.25
:
10.3-.1q+.25q=4.90:
.15q=4.95
:
q=33
:
d=103-33=70