SOLUTION: Matt has twice as many quarters as dimes in his coin collection. if dimes and quarters together total $9.00 how many of each kind of coin does he have?
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Question 541310: Matt has twice as many quarters as dimes in his coin collection. if dimes and quarters together total $9.00 how many of each kind of coin does he have? Answer by josmiceli(19441) (Show Source):
You can put this solution on YOUR website! Let = number of quarters
Let = number of quarters
given:
(1)
(2) ( in cents )
Substitute (1) into (2)
(2)
(2)
(2)
(2)
and, since
(1)
(1)
(1)
He has 15 dimes and 30 quarters
check:
(2)
(2)
(2)
OK
