He gave his friends these three clues to see if they could guess how much he had: The coins equaled 1 dollar, He had no more than 100 coins, he had at least one coin. What combination of coins could Fransisco have in his pocket.
I really need some help with this. I don't even know what they're asking. Please help and explain your answer. I need to know how to do it step by step. Thnx so much to ne one that can help I'm desperate
2007-10-02 13:55:14 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
well how about 4 25 Cents. 20 5 cents, or 10 ten cents, or a mix of all in bewteen.
2007-10-02 14:02:19 · answer #1 · answered by Anonymous · 0⤊ 0⤋
What grade are you in? Because there's a formulated way to do this question, but I don't know if you have learned it yet...
You could do it by guessing/testing. You know that there can't be more than 100 coins, which would be 100 pennies. And he has at least 1 coin, which is 1 dollar...just think of all the combinations of quarters/dollars/dimes/nickels/pennies that add up to 1 dollar.
2007-10-02 21:01:04 · answer #2 · answered by Loren 1 · 1⤊ 0⤋
If he had no more than 100, he could have 100 pennies... Usually problems like this involve having 8 coins, some are pennies and some are nickels, and they add up to a certain amount of money.
Example: Tom has 11 coins (nickels and dimes) in his pocket and they add up to 80 cents. How many of each does he have?
The solution involves subbing a variable for the quantity of each.
Let n represent the number of nickels. Let d represent the number of dimes.
From this we have two equations:
n + d = 11, and 5n + 10d = 80.
We need to rearrange one equation to isolate a variable, and then plug that variable into the other equation.
n + d = 11
n = 11 - d
5n + 10d = 80
5(11 - d) + 10d = 80
55 - 5d + 10d = 80
55 + 5d = 80
5d = 25
d = 5
This shows the number of dimes you have. Getting the number of nickels afterwards is easy.
2007-10-02 21:05:33 · answer #3 · answered by Anonymous · 0⤊ 0⤋
This is basically asking how many ways can you make change for a dollar. The 100 pennies and 1 dollar coin were cited. The rest, and there are several ways, is wide open.
2007-10-02 21:03:38 · answer #4 · answered by cattbarf 7 · 0⤊ 0⤋
Another way of asking this questions is by saying, "How many possible coin combinations can be used to make $1"
2007-10-02 21:01:58 · answer #5 · answered by David F 5 · 1⤊ 0⤋