Melissa buys 2 1/2 pounds of salmon and 1 1/4 pounds of swordfish. she pays a total of $31.25, and the swordfish costs $0.20 per pound less than the salmon. what would be the combined cost of 1 pound of salmon and 1 pound of swordfish?

$16.60

Step-by-step explanation:

2.5x + 1.25(x - .20) = 31.25

2.5x + 1.25x - .25 = 31.25

3.75x - .25 = 31.25

3.75x = 31.25 + .25

3.75x/3.75 = 31.50/3.75

x = 8.40

y = x - .20

y = 8.20

1x + 1y = 16.60

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