Question 1103887
How many pounds of peanuts that sell for $1.8 per pound should be mixed with cashews that sell for $4.5 per pound so that a 10-lb mixture is obtained that will sell for $2.61 per pound?
======================
I saw a method by tutor GreeneStamps in Problem 1103821 that I didn't know:
---
<pre>

1.8        1.89
     2.61
4.5        0.81
</pre>
--
The left column is the 2 prices given.
The center number is the cost of the mix.
The right column is the difference between the left column and the cost ($2.61)
============
Find the ratio of the 2 numbers in the right column --> 7:3
--> 7 pounds of $1.80 peanuts to 3 pounds of $4.50 cashews.
=================
7 pounds of peanuts & 3 pounds of cashews.