SOLUTION: I have two coin problems that I need to do. I have tried all day and can't seem to get them. 1. Nick had 67.50 in pennies and dimes. If there were 150 more pennies than dimes, ho

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Question 444778: I have two coin problems that I need to do. I have tried all day and can't seem to get them.
1. Nick had 67.50 in pennies and dimes. If there were 150 more pennies than dimes, how many dimes dos he have?
2.Virgina and millie saved nickels and dimes. They had a totel of 34 coins whose value was 2.70. How many of each did they have?
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
Let number of dimes be x
pennies will be x+150
Value
convert $ to cents
10x+1(x+150)=6750
10x+x+150=6750
11x=6750-150
11x=6600
/11
x=6600/11
x=600 dimes
600+150=750 pennies
...
let nickels be x
dimes will be 34-x
total value =2.70 = 270 cents
5x+10(34-x)=270
5x+340-10x=270
-5x=-70
x=14 nickels
dimes = 14