Sue's Sushi placed two orders with its fish supplier. One order was for 11 pounds of salmon and 6 pounds of tuna; the order totaled $197. The other order was for 8 pounds of salmon and 4 pounds of tuna; this order totaled $140. What is the cost for one pound of salmon and one pound of tuna?
$10 salmon; $12 tuna
$9 salmon; $13 tuna
$13 salmon; $9 tuna
$15 salmon; $7 tuna

Question

Sue's Sushi placed two orders with its fish supplier. One order was for 11 pounds of salmon and 6 pounds of tuna; the order totaled $197. The other order was for 8 pounds of salmon and 4 pounds of tuna; this order totaled $140. What is the cost for one pound of salmon and one pound of tuna?
$10 salmon; $12 tuna
$9 salmon; $13 tuna
$13 salmon; $9 tuna
$15 salmon; $7 tuna

anonymous · Answer

first make equations.
salmon will be x and tuna will be y.
11x + 6y = 197
8x + 4y = 140
now solve these equations.

anonymous · Answer

so i solve x and y for both and then add them together?

anonymous · Answer

solve both equations with substitution and you'll get the answer.

anonymous · Answer

okay i understand how to do substitution i just dont know how to set up the equations thank you for your help

anonymous · Answer

Joanna went school supply shopping. She spent $33.30 on notebooks and pencils. Notebooks cost $2.50 each and pencils cost $1.35 each. She bought a total of 17 notebooks and pencils. How many of each did she buy?
14 notebooks; 3 pencils
7 notebooks; 10 pencils
9 notebooks; 8 pencils
12 notebooks; 5 pencils

anonymous · Answer

can u help with this one