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

Question 49369: Allen bought 20 stamps at the post office in 37� and 20� denominations. If the total cost of the stamps was $7.06, how many 37� stamps did Allen buy?
Answer by venugopalramana(3286) (Show Source): You can put this solution on YOUR website!
Allen bought 20 stamps at the post office in 37�(X SAY) and 20� (Y SAY)denominations. If the total cost of the stamps was $7.06, how many 37� stamps
did Allen buy?
X+Y=20.....Y=20-X......I
VALUE =37X+20Y=706..........II
37X+20(20-X)=706
37X+400-20X=706
17X=706-400=306
X=306/17=18

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