Problema Solution
If a chef wishes to mix a salad dressing worth $5 per bottle with another salad dressing which is worth $12 a bottle to obtain 7 bottles of a salad dressing which is worth $8 a bottle, how many bottles of the $12 dressing must be used?
Answer provided by our tutors
let the no of 5$ bottle used is x and 12$ be y
then 5x+12y =7*8 =56
4*5 + 12*3 = 56 by hit and trail method
so y = 3...nswer