SOLUTION: April has 100 stamps - some of which are worth 20 cents each and the rest are worth 17 cents each. If the total value of the stamps is $18.83, how many 17 cnets stamps does april h

Question 666381: April has 100 stamps - some of which are worth 20 cents each and the rest are worth 17 cents each. If the total value of the stamps is $18.83, how many 17 cnets stamps does april have?
I have tried .2(50y)+.17y = 18.83 so far
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = number of 20 cent stamps
Let = number of 17 cent stamps
given:
(1)
(2)
-----------------------
(2)
Multiply both sides of (1) by
and subtract (1) from (2)
(2)
(1)

and
(1)
(1)
(1)
61 = number of 20 cent stamps
39 = number of 17 cent stamps
check:
(2)
(2)
(2)
OK

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