SOLUTION: Mackenzie has 15 coins, which are all nickels and dimes. If the nickels were changed to quarters and the dimes were changed to nickels, the total value of the coins would remain un
Algebra.Com
Question 785005: Mackenzie has 15 coins, which are all nickels and dimes. If the nickels were changed to quarters and the dimes were changed to nickels, the total value of the coins would remain unchanged. How many nickels and how many dimes does she have? ( the total value of the coins are not given, just the number of coins)
Answer by Edwin McCravy(20056) (Show Source): You can put this solution on YOUR website!
n + d = 15
5n + 10d = 25n + 5d
Simplify and solve that system by substitution.
Edwin
RELATED QUESTIONS
Britney has 30 coins, all nickels (5 cents) and dimes (10 cents). If the nickels were... (answered by ankor@dixie-net.com)
A bag has 274 coins of nickels, dimes and quarters. There are twice as many nickels as... (answered by ikleyn,josgarithmetic,MathTherapy)
Tameen keeps quarters, nickels, and dimes in his change jar. He has three more quarters... (answered by stanbon,fractalier)
A collection of 20 coins made up of only nickels, dimes, and quarters has a total value... (answered by solver91311)
A collection of 20 coins made up of only nickels, dimes and quarters has a total value of (answered by ankor@dixie-net.com)
The total value of the nickels, dimes, and quarters in a coin bank is $4. If the nickels... (answered by stanbon)
Barbara has 20 coins consisting of nickels and dimes. If the nickels were dimes
and the... (answered by Alan3354)
Barbara has 20 coins consisting of nickels and dimes. If the nickels were dimes and the... (answered by Edwin McCravy)
brandon has 20 coins consisting of nickels and dimes. if the nickels were dimes and the... (answered by macston)