SOLUTION: have 34 coins of nickels and dimes where the total value is 1.90.
how many nickels are there?
d + n = 34 n=34-d
.10d + .05n = 1.90
I set the problem up like this...but
Algebra.Com
Question 382278: have 34 coins of nickels and dimes where the total value is 1.90.
how many nickels are there?
d + n = 34 n=34-d
.10d + .05n = 1.90
I set the problem up like this...but after several attempts not able to complete this correctly when i try to verify...
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
have 34 coins of nickels and dimes where the total value is 1.90.
how many nickels are there?
d + n = 34 n=34-d
.10d + .05n = 1.90
I set the problem up like this...but after several attempts not able to complete this correctly when i try to verify
-------------
You're doing the right things.
d + n = 34 n=34-d
.10d + .05n = 1.90
Sub for n in the 2nd eqn.
0.1d + 0.05*(34-d) = 1.9
10d + 5(34-d) = 190
5d + 170 = 190
d = 4
n = 30
30 nickels
----------------
There's another approach that might be simpler:
If all 34 coins were nickels, you'd have 170 cents
Each nickel that's replaced by a dime adds 5 to the total.
190 - 170 = 20
20/5 = 4 replacements with dimes
--> 30 nickels
RELATED QUESTIONS
a collection of 34 coins consist of dimes and nickels. the total value is 2.05. how many... (answered by algebrahouse.com)
the question is:
Your piggy bank has a total of 47 coins in it; some are dimes and... (answered by ankor@dixie-net.com,scott8148)
In a change purse there are some nickels some dimes and some quarters. There are 100... (answered by gonzo)
Joe has a collection of nickels and dimes that is worth $5.65. If the number of dimes... (answered by ankor@dixie-net.com)
A jar of coins has quarters, nickels, and dimes. The total number of coins is 100. The... (answered by stanbon)
Mike's bank contains only nickels, dimes, and quarters. There are 62 coins in all, valued (answered by venugopalramana)
Michael has 34 coins in nickels and dimes. The total value of the coins is $2.45. If... (answered by josgarithmetic)
question: a collection of nickels, dimes, and quarters consist of 15 coins with a total... (answered by stanbon)
A person has 20 coins, all nickels and dimes, worth one dollar and 40 cents. How many... (answered by Edwin McCravy,ikleyn)