HELP ASAP!! THIS IS DUE IN 20 MINS

Question

Joe bought 13 items for $60. If the 13 items consisted of notebooks that cost $5 each and calculators that cost $4 each, how many of each did he buy.

Answer 1

N + C = 13

5N +4C=60

4N+ 4C =4(13)

N = 60-52 = 8 notebooks

C = 13-8 = 5 calculators