# Math

posted by Emily

Mr.Adams had a coin collection including only nickels, dimes, and quarters He had twice as many dimes as nickels and half as many quarters as he had nickels. If the total face value of his collection was \$300.00, how many quarters did the collection contain?

A) 75
B) 100
C) 250
D) 400
E) 800

I got A but it isn't right and I don't know what to do.

1. Damon

d = 2 n
q = .5 n

5 n + 10 d + 25 q = 30,000 cents

5 n + 20 n + 12.5 n = 30,000

37.5 n = 30,000

n = 800
so
q = 400
D

2. Emily

Thank yoU!

3. Damon

You are welcome.

## Similar Questions

1. ### Math

In a collection of nickels, dimes, and quarters worth &6.90, the ratio of the number of nickels to dimes is 3:8. The ratio of the number of dimes to quarters is 4:5. Find the number of each type of coin. Use a coin value chart to help. …
2. ### math

In a collection of nickels, dimes and quarters, there are twice as many dimes as nickels, and 4 fewer quarters than dimes. The total value of the coins is \$5.75. How many nickels are there in the collection ?
3. ### mathematics

In a collection of nickels, dimes and quarters, there are twice as many dimes as nickels, and 4 fewer quarters than dimes. The total value of the coins is \$5.75. How many nickels are there in the collection ?
4. ### mathematics

In a collection of nickels, dimes and quarters, there are twice as many dimes as nickels, and 4 fewer quarters than dimes. The total value of the coins is \$5.75. How many nickels are there in the collection ?
5. ### mathematics

In a collection of nickels, dimes and quarters, there are twice as many dimes as nickels, and 4 fewer quarters than dimes. The total value of the coins is \$5.75. How many dimes are there in the collection ?
6. ### mathematics

In a collection of nickels, dimes and quarters, there are twice as many dimes as nickels, and 4 fewer quarters than dimes. The total value of the coins is \$5.75. How many quarters are there in the collection ?
7. ### math

In a collection of coins worth \$9.13, there are twice as many dimes as quarters, four more nickels than dimes, and twice as many pennies as nickels. How many of each kind of each coin are in the collection?
8. ### argosy

Cory has a collection of nickels, dime and quarters with a total value of 2.55. There are 6 more dimes than nickels and twice as many quarters as nickels. How many of each coin is in her collection?
9. ### Math

A collection of nickels dimes and quarters consist of 22 coins with the total value of 1.75. If the number of nickels is three times the number of dimes, how many of each coin are contained in the collection
10. ### math

Every night when Isabella came home from work she put any change she had in her pockets into a jar. One day she wanted to know how much change she had in her jar. She noticed that she had two more nickels than twice the number of dimes, …

More Similar Questions