Question 1047249
Two EQs, two unknowns: n(notebooks) and p(pencils)
3n + 2p = 2.80
2n + 5p = 2.60  Multiply by -2/5 to eliminate p

(15/5)n + 2p = 2.80
<u>-(4/5)n - 2p = -1.04</u>
(11/5)n = 1.76
n = $0.80, cost of notebook 80cents
p = $0.20  {{{(2.60 -1.60)/5}}}, cost of pencil 20cents

AND
2.40 + 40 = 2.80 CHECKS!
3n + 2p = 2.80