Answer:
Cost of first stamp = 0.62 dollars
Cost of second stamp = 0.62 dollars
Cost of third stamp = 3.72 dollars
Step-by-step explanation:
Number of stamps John bought = 3
Cost of two stamps were same, so let it be x
Cost of third stamp is 3 times as much as there other two together
So the cost of third stamp will be 3(x+x)
Amount paid for all the three stamp was five dollar and john received a balance of 4 cents. so the cost was 4.96 dollars.
Cost of stamp 1+ cost of stamp 2 + cost of stamp 3 = 4.96
x+ x+ 3(x+x) = 4.96
2x+3(2x)=4.96
2x+6x=4.96
8x = 4.96
[tex]x= \frac{4.96}{8}[/tex]
x= 0.62
Thus the cost of first stamp was 0.62 dollars, cost of second stamp was 0.62 dollars.
The cost of third stamp was
= 3(x+x)
=3(0.62 +0.62)
=3(1.24)
=3.72
