Question

derek has some nickels and dimes worth $3.60. the number of dimes is one more than twice the number of nickels. how many nickels and dimes does he have?

Answer 1

Let n= # of nickels and
d= # of dimes.

And we know the total is $3.60
So
0.05n + 0.10d = 3.60
Because a nickel is $0.05 and a dime is 0.10

Answer 2

And the number of dimes is one more thantwice the number of nickels
So
d= 1 + 2n

Using these two equations, you can use substitution to find n and d