Posted by **Blakey** on Wednesday, June 12, 2013 at 8:27pm.

I have a bunch of nickels and quarters worth $7.85 in my [pocket. How do I write a system of equation to solve and determine how many of each coin I have!!

- Math 8th Grade -
**Reiny**, Wednesday, June 12, 2013 at 8:55pm
5N + 25Q = 785

N + 5Q = 157

N = 157 - 5Q

Of course you cannot have a unique solution, since you don't have enough information to form a second equation.

But...

you said he has a bunch of nickels and quarters, so he has at least one of each

so let Q be a number form 1 to 25 to get different combinations

Q N ------ combination ----------- value

1 152 ---- 1 quarter + 152 nickels = $7.85

2 147 -----2 quarters + 147 nickels = $7.85

...

25 32 ----- 25 quarters + 32 nickels = $7.85

## Answer This Question

## Related Questions

- math - can someone help explain how to do this? allen has nickels dimes and ...
- Math coin riddle need help please - I have 56 coins consisting of nickels and ...
- Math - You have some quarters and some nickels in your pocket in total you have ...
- math - Gary has 10 coins in his pocket. 2 quarters 5 dimes 3 nickels without ...
- Math - "Jack has a collection of nickels and quarters. He has a total of 50 ...
- Algebra - Solve the problem using matrices. John has a jarful of quarters and ...
- 6th grade math - We are learning probability and can you please check my answer...
- math - Corrine has 3 quarters, 7 dimes, 6 nickels, and 4 pennies in her pocket...
- math - Sam has 18 coins in his pocket that are either quarters or nickels. The ...
- math - in his left pocket ralph has 4 quarters and 5 nickels. in his right ...

More Related Questions