Vanessa has 40 nickels and dimes the total value of coins of $3.25 let NBA the number of nickels let D be the number of DiMrs

Question

Vanessa has 40 nickels and dimes the total value of coins of $3.25 let N be the number of nickels let D be the number of Dimes. How many nickels are there how many dimes are there

Answer 1

N+D = 40

5N + 10D = 325 --> N + 2D = 65

Subtracting the first equation FROM the second: D = 25

25 dimes and 15 nickels.

That's $2.50 + 0.75 = $3.25