Question

16 lb of Brand M Cinnamon was made by combining 12 lb of Indonesian cinnamon which costs $19/lb with 4 lb of Thai which costs $11/lb. What is the cost per lb of the mixture?

Answer 1

$17/lb

Explanation:

12 lb is `12/16*100% = 75%` of 16 lb.
4 lb is `4/16*100% = 25%` of 16 lb.

So the mix costs `(75% * $19)/(100%) + (25% * $11)/(100%)=0.75*$19+0.25 * $11=$17`