A youth organization collected nickels and dimes for a charity drive. By the end of the 1-day drive, the youth had collected $57.75. If there were five times as many dimes as nickels, how many of each type of coin was collected?
number of nickels --- x
number of dimes ----- 5x
5x + 10(5x) = 5775
solve for x, it is easy
You need to use a system of equations. Lets say that N equals the number of nickels, and D is the number of dimes.
D = 5 x N
because there are 5 times as many dimes as nickels
.05N + .1D = 57.75
the .05 and .1 represent the value of the coins (N is 5 cents, D is 10)
Well, you know the value of D is 5 x N, so you can substitute it into the problem
.05N + .1(5 x N) = 57.75
.05N + .5N = 57.75
.55N = 57.75
N = 105
Now that you know the number of nickels, plug the value back into the first equation to find out the number of dimes
D = 5 x N
D = 5 x 105
D = 525
So the answer is 105 nickels and 525 dimes
Jessica has a handful of nickels and quarters worth a total of $5.455. If she has seven more nickels than quarters, how many of each type of coin does she have?
To solve this problem, we can use a system of equations. Let's represent the number of nickels as 'n' and the number of dimes as 'd'.
From the given information, we can deduce two equations:
1) The total value of nickels and dimes collected is $57.75:
0.05n + 0.10d = 57.75
2) The number of dimes is five times the number of nickels:
d = 5n
Now we can substitute the value of 'd' from equation (2) into equation (1) to find the number of nickels:
0.05n + 0.10(5n) = 57.75
Simplifying the equation:
0.05n + 0.50n = 57.75
Combining like terms:
0.55n = 57.75
To isolate 'n', we divide both sides of the equation by 0.55:
n = 57.75 / 0.55
Evaluating the right side of the equation:
n ≈ 105
So, the number of nickels collected is approximately 105.
Now, we can substitute this value back into equation (2) to find the number of dimes:
d = 5n
d = 5 * 105
d = 525
Therefore, the number of dimes collected is 525.
In conclusion, the youth organization collected 105 nickels and 525 dimes.