SOLUTION: bill has 10 coins which are quarters and dimes if his quarters were dimes and his dimes were quarters the total is 30 cents more how many quarters does he has?
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Question 241985: bill has 10 coins which are quarters and dimes if his quarters were dimes and his dimes were quarters the total is 30 cents more how many quarters does he has? Answer by josmiceli(19441) (Show Source):
You can put this solution on YOUR website! Let = number of dimes he has
Let = number of quarters he has
given:
(1)
(2)
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Notice that on the right side, I make the quarters
worth each and dimes worth each
From (1):
(1)
And, substituting:
(2)
And, since
He has 4 quarters
check answer:
(2)
OK
