math
posted by samantha
Every night when Samantha came home from work she put any change she had in her pockets into a jar. One day she wanted to know how much change she had in her jar. She noticed that she had two more nickels than twice the number of dimes, and eight fewer quarters than twice the number of nickels. If the value of the quarters was $1.60 more than four times the value of the nickels and dimes together, what was the total value of the change in Samantha's jar?

samantha
plese help

Steve
just start writing down the facts as math.
n = 2d+2
eight fewer quarters than twice the number of nickels
q = 2n8
value of the quarters was $1.60 more than four times the value of the nickels and dimes together
25q = 4(10d+5n)+160
Putting all that together, we have
n = 2d+2
q = 2n8
25q = 4(10d+5n)+160
substituting in for q and n in the last equation, we have
25(2(2d+2)8) = 4(10d+5(2d+2))+160
d=15
So, now you know how many dimes there are, and you can figure out the other coins. 
Maryam
I. Need help in math
Respond to this Question
Similar Questions

biology
Bromothymol blue (BTB) is a chemical that turns yellow in the presence of carbon dioxide. In the presence of oxygen, BTB stays blue. In his science class, Sanjay used BTB to test for the presence of those two gases in three situations. … 
math
if you have a jar filled with candy and every time you take one candy out you put the wrapper back into the jar. the wrapper takes 10% of the volume of a piece of candy. How many times will you have to fill the jar before half the … 
Math
1. Daniel wants to save at least 20 dollars by putting pennies in a jar daily. On first day, he puts one penny into the jar. The second day he puts 2 pennies into the same jar. On the nth day he pus n pennies into the same jar. Which … 
Math
1. Daniel wants to save at least 20 dollars by putting pennies in a jar daily. On first day, he puts one penny into the jar. The second day he puts 2 pennies into the same jar. On the nth day he pus n pennies into the same jar. Which … 
Math
Bill is saving money in an empty jar. The first day he puts in a certain amount of money. Every day after the first he puts in 2 more dollars than the amount he put in on the previous day. After 10 days he has put 200 dollars in the … 
Math Help!
I apologize for all these questions but I really need to get them done fast so I appreciate if you tried to answer some of them! 1. Bill is saving money in an empty jar. The first day he puts in a certain amount of money. Every day … 
Math
Thomas put 1/4 of the c coins he had in his pocket into the jar under his bed. He put 16 coins into the jar. The equation that models this situation is 1/4c = 16. How many coins did Thomas have in his pocket? 
Algebra
A jar of change has 28 coins which is worth $2.60. If the jar only has nickels and dimes, how many of each type are in the jar? 
math
Every night when Isabella came home from work she put any change she had in her pockets into a jar. One day she wanted to know how much change she had in her jar. She noticed that she had two more nickels than twice the number of dimes, … 
Math
Every day when Lisa returns from school, she puts her change from buying lunch into a jar on her dresser. This weekend she decided to count her savings. She found that she had 72 coins, all nickels and dimes. The total amount was $4.95. …