Asked by david
i have 8 coins in my piggy bank. I have twice as many dimes as I have quarters. I have twice as many pennies as I have dimes. I have less than 95 cents altogether. How many of each coin do I have?
Answers
Answered by
Jennifer
Let P be the number of pennies, D be the number of dimes, Q be the number of quarters, and N the number of nickels
(if N is 0, we will discover it when we solve the system of equations)
P + D + Q + N = 8
P = 2*D
D = 2*Q
P + 10*D + 25*Q < 95
Q can only be only 1, otherwise P >= 8
So then D must be 2
and P must be 4
and then there must be one nickel
(if N is 0, we will discover it when we solve the system of equations)
P + D + Q + N = 8
P = 2*D
D = 2*Q
P + 10*D + 25*Q < 95
Q can only be only 1, otherwise P >= 8
So then D must be 2
and P must be 4
and then there must be one nickel
There are no AI answers yet. The ability to request AI answers is coming soon!
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.