A doctor has prescribed an antibiotic medication to a patient and the pharmacist must calculate the correct dosage. The patient is 136 pounds and should be given 7 milligrams of medication for every 20 pounds
they weigh.
Write a proportion.

let soccer = x and golf = y

part a

1st equation: x + y = 125

2nd equation: x = y +45

part b

replace x in the 1st equation with the 2nd one:

y + 45 + y = 125

simplify:

2y + 45 = 125

subtract 45 from each side:

2y = 80

divide both sides by 2:

y = 80/2

y = 40

she plays golf for 40 minutes.

part c

no because she plays soccer for 45 minutes longer than golf 40 +45 =   85 minutes, not 80 minutes.

40 x 50 = 2000

step-by-step explanation: