Sarah has some dimes and quarters if she has 20 coins worth a total $3.65 how many of each type of coin does she have
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Answer:
Step-by-step explanation:
d + q = 29 (# of coins)
10d + 25q = 440 (value of coins)
d = 29 - q
Substitute the value for d
-- 10(29-q) + 25q = 440
290 + 15q = 440
15q = 150
q = 10 quarters
d = 19 dimes
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