SOLUTION: a piggy bank has 50 coins. the coins are only nickles and dimes. The bank has $4.55 in total. How many coins are nickles, how many dimes?
Algebra.Com
Question 251148: a piggy bank has 50 coins. the coins are only nickles and dimes. The bank has $4.55 in total. How many coins are nickles, how many dimes?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
a piggy bank has 50 coins. the coins are only nickles and dimes. The bank has $4.55 in total. How many coins are nickles, how many dimes?
----------------------------------------------------------------
Equations:
Quantity Equation: n + d = 50
Value Equation::: 5n+ 10d = 455
---------------------------------
Multiply thru the Quantity Eq by 5 to get:
5n + 5d = 250
---
Subtract that from the Value equation and solve for "d":
5d = 205
d = 41 (# of dimes)
----
Substitute into n+d = 50 and solve for "n":
n+41 = 50
n = 9 (# of nickels)
==========================
Cheers,
Stan H.
RELATED QUESTIONS
Your piggy bank has 50 coins worth a total of $4.55. The coins are only nickels and... (answered by Fombitz)
you dump out your piggy bank and find that you have only nickels and dimes. there are a... (answered by mananth,MathTherapy,greenestamps)
a piggy bank has $4.40 in nickels, dimes and quarters. there are twice as many quarters... (answered by Fombitz)
a piggy bank contains 91 coins which are nickles, dimes and quarters. there are twice as... (answered by stanbon)
A child’s piggy bank contains 35 coins and a total of $6.25. The bank contains... (answered by ikleyn)
Alicia opens her piggy bank to find only nickles and dimes inside. She counts the coins... (answered by stanbon,solver91311,richwmiller)
a piggy bank has only nickels and dimes in it. there are 16 coins worth $1.20. how many... (answered by Alan3354)
Your piggy bank has a total of 40 coins in it. Some are dimes and some are nickles. If... (answered by josmiceli)
Ann has a piggy bank with 48 coins, all of which are dimes and nickels. The total amount (answered by ikleyn,Alan3354,greenestamps)