Homework Help: Math

Posted by Lisa on Wednesday, February 16, 2011 at 11:40pm.

Joe has a collection of nickels and dimes that is worth $6.05 if the number of dimes was double and the number of nickels was decreased by 10 the value of the coins would be $9.85 how many nickels and dimes does he have?

Math - Reiny, Wednesday, February 16, 2011 at 11:51pm
case 1:
let the number of nickels be n
let the number of dimes be d
5n + 10d = 605
n + 2d = 121

case 2
number of nickels ---> n - 10
number of dimes ---> 2d
5(n-10) + 10(2d) = 985
5n - 50 + 20d = 985
5n + 20d = 1035
n + 4d = 207

subtract them
2d = 86
d = 43 then n = 35

He has 43 dimes and 35 nickels
Math - Anonymous, Friday, November 2, 2012 at 8:47pm
burblrshkash ahhhrq

Answer this Question

Related Questions

math - Joe has a collection of nickels and dimes that is worth $6.20. If the ...
math - Joe has a collection of nickels and dimes that is worth $8.55. If the ...
algebra help - Solve the problem. Joe has a collection of nickels and dimes that...
Math - In a collection of nickels, dimes, and quarters worth &6.90, the ...
Math - the banks contains quarters , dime and nickels. The number of dimes is 1 ...
Math - sally has twice as many dimes as nickels. the total value is $3.50. how ...
Algebra - Anne has 20 coins in her pocket consisting of nickels and dimes only. ...
Math - A collection of 30 coins worth $5.50 consists of nickels, dimes, and ...
Algebra - Dylan has $2.30 in dimes and nickels. The dimes exceed nickels by 5. ...
algebra - A collection of nickels, dimes, and quarters amounts to $9.50. If ...

For Further Reading

First Name:
School Subject:
Answer: