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

total amount of money that he should pay if he has not used his duty free exemption is $98

step-by-step explanation:

given a united states citizen returning to the states declares the following items at the customs office: 3 shirts at $8.50 each 2 dresses at $27.50 each 1 pair of gold cuff links at $17.50 per pair. we have to find how much he pay

cost of 3 shirts if one cost at $8.50 is

cost of 2 dresses if one cost at $27.50 is  

cost of 1 pair of gold cuff at $17.50

so, total amount of money that he should pay if he has not used his duty free exemption is   $25.5+$55+$17.50=$98