Question

A stack of nickles and dimes is worth $2.55. Find the number of nickles if the number of dimes is 12 less than twice the number of nickles.

Answer 1

There are fifteen (15) nickels.

Answer 2

oh thanks:)

Answer 3

Let n and d be the number of nickles and dimes respectively.
Solve the following for n and d:\[\{5n+10d=255,2n-12\text{ = }d\}\]\[\{n=15,d=18\} \]

Answer 4

so there is 18 nickles?

Answer 5

There are 15 nickels