SOLUTION: if i have 20 coins only dimes and quarters and have $3.80 how many quters do i have

Question 373028: if i have 20 coins only dimes and quarters and have $3.80 how many quters do i have
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = number of dimes
Let = number of quarters
given:
(1)
(2) (in cents)
-------------------------------
Multiply both sides of (1) by
and subtract (1) from (2)
(2)
(1)

And, from (1),

I have 8 dimes and 12 quarters
check answer:
(2)
(2)

OK

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