Question 78042
Allen bought 20 stamps at the post office in 0.37 and 0.20 denominations. If the total cost of stamps was $7.06, how many 0.37 stamps did allen buy?
---------
Let # of 37 cent stamps be "x" ; Value of these is 37x cents
# of 20 cent stamps is "20-x" ; Value of these is 20(20-x)= 400-20x cents
--------
EQUATION:
value + value = 706 cents
37x + 400-20x = 706
17x=306
x=18 (this is the number of 37 cent stamps)
=========
Cheers,
Stan H.