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anonymous
 4 years ago
A girl has 8 coins in dimes and quarters. Their value is $1.55. How many quarters does she have?
anonymous
 4 years ago
A girl has 8 coins in dimes and quarters. Their value is $1.55. How many quarters does she have?

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LollyLau
 4 years ago
Best ResponseYou've already chosen the best response.1Diagram method. 1. Draw 8 circles, representing 8 coins A coin must at least carry a value of 10 cents. 2. Draw 1 leg for 10 cents onto every circle. Draw the remaining legs until the value reaches $1.55. (3 legs for a quarter)

Mertsj
 4 years ago
Best ResponseYou've already chosen the best response.0d=8q from the first equation. Replace d with 8q in the second equation and solve.

LollyLau
 4 years ago
Best ResponseYou've already chosen the best response.1I still like my method better :)

Mertsj
 4 years ago
Best ResponseYou've already chosen the best response.0.10(8q)+.25q=1.55 10(8q)+25q=155 8010q+25q=155 15q=75 q=5 d=3
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