Question

Help, picture attached & please show working out thanks.

Answer 1

i think there is a typo in the question....it says explicitly that 100 liters of Alenol and 150 liters of Butyrox are ordered
thats the answer not the constraints ??

Answer 2

nope, u have to write the constraints given that information, read part a)

Answer 3

ok then let x = liters of Alenol and y = liters of Butyrox

constraints:
x+y <400 --> y <400-x
x = 100
y = 150