Friday

August 1, 2014

August 1, 2014

Posted by **Vamma** on Monday, October 19, 2009 at 6:15pm.

(i found the answer through guess and check but i need to know the equation....btw the answer is 80 nickels and 20 dimes....plz help me find the equation)

- math algebra 1 -
**jim**, Monday, October 19, 2009 at 6:22pmLet n be the number of nickels

d the number of dimes

n = 4d because we are told "4 times as many nickels as dimes"

The total value is:

n * 5 + d * 10 = 600

Divide across by 5:

n + 2d = 120

and n=4d, so

4d + 2d = 120

6d = 120

d= 20

So n = 4d = 80

**Related Questions**

Algebra - This is a word problem I am supposed to solve with systems. I am ...

Math - There are 9 coins in a piggy bank in terms of dimes and nickels and the ...

8th Grade Algebra - I need help with these problems: 1) A vending machine takes ...

math - 1. Ms.lynch has 21 coins in nickels and dimes. Their total value is $1.65...

algebra - a bag contains only nickels and dimes. there are exactly 18 coins in ...

Algebra - Anne has 20 coins in her pocket consisting of nickels and dimes only. ...

math - Three coins are selected from 10 coins: 4 dimes, 4 nickels, and 2 ...

math - aviva has a total of 52 coins, all of which are either dimes or nickels. ...

Math problem I need help with - Combination of coins that can be used; fifty-...

math - Using pennies, nickels, dimes or quarters, determine which kind of coin ...