John spent $10.40 on 5 notebooks and 5 pens. Ariana spent $7.00 on 4 notebooks and 2 pens. What is t | MathCelebrity Forum

John spent $10.40 on 5 notebooks and 5 pens. Ariana spent $7.00 on 4 notebooks and 2 pens. What is t

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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:
  1. 5n + 5p = 10.40
  2. 4n + 2p = 7
Using our simultaneous equation calculator, we have:
  • n = 1.42
  • p = 0.66
 
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