SOLUTION: Allen bought 20 stamps at the post office in 37cents and 20 cents denominations. If the total cost of the stamps was $7.06, how many 37 cents stamps did Allen buy? a. 16 b.

Algebra ->  Equations -> SOLUTION: Allen bought 20 stamps at the post office in 37cents and 20 cents denominations. If the total cost of the stamps was $7.06, how many 37 cents stamps did Allen buy? a. 16 b.       Log On


   



Question 45010: Allen bought 20 stamps at the post office in 37cents and 20 cents denominations. If the total cost of the stamps was $7.06, how many 37 cents stamps did Allen buy?
a. 16
b. 18
c. 15
d. 17

Answer by Nate(3500) About Me  (Show Source):
You can put this solution on YOUR website!
37 cent stamps: b
20 cent stamps: s
s+%2B+b+=+20
+
.2s+%2B+.37b+=+7.06
so ....
-.2s+-+.2b+=+-4
+
.2s+%2B+.37b+=+7.06
=
.17b+=+3.06
b+=+18
(b)