How do you solve this math problem

Question

Reggie has a total of 36 coins consisting of nickels and quarters. The total value of the coins is $3.80. How many of each type of coin does he have?

Answer 1

n = number of nickels worth 0.05 dollars each

q = number of quarters worth 0.25 dollars each

n + q = 36

0.05n + 0.25q = 3.80

You have a system of 2 linear equation in 2 unknowns n and q, which you can solve by substitution or elimination. Can you take it from here and finish?