SOLUTION: Kendra has $8.40 in dimes and quarters. If she has 2 times as many quarters as dimes, how many of each coin does she have?

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Question 784486: Kendra has $8.40 in dimes and quarters. If she has 2 times as many quarters as dimes, how many of each coin does she have?
Answer by harpazo(655) About Me  (Show Source):
You can put this solution on YOUR website!
Let 2(0.25x) be quarters
Let 0.10x be dimes
2(0.25x) + 0.10x = 8.40
You can finish.