SOLUTION:
You collect a total of 300 coins and the total amount is $8.40
Find the number of pennies and dimes you have collected
right out an equation showing the number of pennies=p a
Algebra ->
Customizable Word Problem Solvers
-> Coins
-> SOLUTION:
You collect a total of 300 coins and the total amount is $8.40
Find the number of pennies and dimes you have collected
right out an equation showing the number of pennies=p a
Log On
Question 699634:
You collect a total of 300 coins and the total amount is $8.40
Find the number of pennies and dimes you have collected
right out an equation showing the number of pennies=p and dimes=d that you have collected Answer by checkley79(3341) (Show Source):
You can put this solution on YOUR website! .01P+.10D=8.40
P+D=300
P=300-D
.01(300-D)+.10D=8.40
3.00-.01D+.10D=8.40
.09D=8.40-3.00
.09D=5.40
D=5.40/.09
D=60 DIMES ANS.
P+60=300
P=300-60
P=240 PENNIES ANS.
PROOF:
.01*240+.10*60=8.40
2.40+6.00=8.40
8.40=8.40
(