John spent $10.40 on 5 notebooks and 5 pens. Ariana spent $7.00 on 4 notebooks and 2 pens. What is the ost of 1 notebook and what is the cost of 1 pen?
Let the number of notebooks be n and the number of pens be p. We have two equations:
Let the number of notebooks be n and the number of pens be p. We have two equations:
- 5n + 5p = 10.40
- 4n + 2p = 7
- n = 1.42
- p = 0.66