SOLUTION: 20 stamps were sold for $6.62. Some stamps were 24 cents and some were 37 cents. How many of each stamp were sold?

SOLUTION: 20 stamps were sold for $6.62. Some stamps were 24 cents and some were 37 cents. How many of each stamp were sold?

Algebra.Com

Question 159454: 20 stamps were sold for $6.62. Some stamps were 24 cents and some were 37 cents. How many of each stamp were sold?
Answer by checkley77(12844) (Show Source): You can put this solution on YOUR website!
X+Y=20 OR X=20-Y
.24X+.37Y=6.62
.24(20-Y)+.37Y=6.62
4.8-.24Y+.37Y=6.62
.13Y=6.62-4.8
.13Y=1.82
Y=1.82/.13
Y=14 37CENT STAMPS WERE SOLD.
20-14=6 24 CENT STAMPS WERE SOLD.
PROOF:
.24*6+.37*14=6.62
1.44+5.18=6.62
6.62=6.62
RELATED QUESTIONS
A postal clerk sold 75 stamps, some of which were 5 cents and some were 8 cents. The... (answered by checkley75)

PlEASE help! A postal clerk sold some fifteen-cent stamps and some twenty-five cent... (answered by Paul)

A postal clerk sold some $.34 stamps and some $.23 stamps. Altogether, 15 stamps were... (answered by josmiceli,mgmoeab)

A postal clerk sold 70 stamps for $17.00.Some were 35 cent stamps and some were 20... (answered by checkley71)

A postal clerk sold some 13 cent stamps and some 20 cent stamps. Altogether, 60 stamps... (answered by checkley77,jojo14344)

A postal-clerk sold some 20-cent stamps and some 28-cent stamps. Altogether 160 stamps... (answered by ewatrrr)

A postal clerk sold 75 stamps for a total of $10.85. Some of the stamps were 15-cent... (answered by stanbon)

A postal clerk sold 40 stamps for $5.40. Some were 10-cent stamps and some were 15-cent... (answered by ikleyn,amalm06)

James bought 80 postage stamps for which he paid $3.50. Some were 3-cents stamps and some (answered by checkley77)