Pavlova V. answered 11/08/15
Tutor
New to Wyzant
Calculus, differential equations, probability
let B is the mass of the bottle empty
let J is the mass of the juice alone
B+J = 1.8
B+5/8J=1.23
subtract both equations and you get
j-3/8j=1.8-1.23
3/8j=.57
=8(.57)/3=J
j=1.52
substitute j into one of the equations above to find B
B+1.52=1.8
B=1.8-1.52
B=.28KG