Albert bought 9 pounds of fish at a grocery store at $5 per pound for salmon and $3 per pound for catfish. He spent a total of $

Question

3 years ago

7

Albert bought 9 pounds of fish at a grocery store at $5 per pound for salmon and $3 per pound for catfish. He spent a total of $

37 on the salmon and catfish. This can be represented using the following system of equations:5s +3c = 37 s + c = 9 How many pounds of salmon did Albert purchase?

Mathematics

1 answer:

zalisa [80] · Answer 1 · 2022-09-17T02:10:36+03:00

zalisa [80]3 years ago

7 0

Answer:

5 pounds

Step-by-step explanation:

To find that we simply solve the system of equations
So make c the subject of the formula of equation 2
$s+c=9\\c=9-s$
Substitute in equation 1
$5s+3c=37\\5s+3(9-s)=37\\5s+27-3s=37\\5s-3s+27-(27)=37-(27)\\2s=10\\s=5$ so that's 5 pounds of salmon