Homework Help: math algebra 1

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

There are 4 times as many nickels as dimes in a coin bag. The coins have a total value of 600 cents ($6.00). Find the number of nickels. Write and solve an equation to do so.

(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 6:22pm
Let 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

Answer this Question

Related Questions

8th Grade Algebra - I need help with these problems: 1) A vending machine takes ...
Math - There are 9 coins in a piggy bank in terms of dimes and nickels and the ...
Math problem I need help with - Combination of coins that can be used; fifty-...
Algebra - This is a word problem I am supposed to solve with systems. I am ...
8th gr. Algebra - I have 3 math problems for homework that are stumping me. Can ...
math - Three coins are selected from 10 coins: 4 dimes, 4 nickels, and 2 ...
Algebra - Anne has 20 coins in her pocket consisting of nickels and dimes only. ...
algebra - a bag contains only nickels and dimes. there are exactly 18 coins in ...
math - aviva has a total of 52 coins, all of which are either dimes or nickels. ...
College Algebra - A coin jar contains nickels, dimes and quarters. There are 46 ...

For Further Reading

First Name:
School Subject:
Answer: