Let x mg and y mg be the dosage of medications A and B

(a) Patient I

Daily intake of A = 6x ( 4 times a day)

Daily intake of B= 2y (Twice a day)

Hence 6x +2y= 23.2 Or, 3x+y = 11.6 ...(1)

And 8x=5y Or, 8x-5y=0 …(2)

This gives x= or, 2.5mg and y= or, 4.0 mg, both figures rounded to one decimal place

(b) Patient II

6x+2y= 87.8 , Or, 3x+y= 43.9 ….. (1)

And 8x=5y, Or, 8x-5y=0 ……(2)

Or,

This gives x= , Or 9.5 mg and y= , Or 15.2 mg, both figures rounded to one decimal place

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