A man wants to make up 100 one-pound jars of nuts to sell for 66 cents a jar. He plans to use 40 pounds of nuts worth 75 cents a pound. What should be the price of the other type of nuts he uses? Answer:

He has 60 pounds that cost x cents/pound
He has 40 pounds that cost 75 cents/pound
He wants to sell 100 pounds for 66 cents a pound.

The equation looks like this.
40*75 + 60*x = 100*66 
3000 + 60x = 6600 Subtract 3000 from both sides.
60x = 6600 - 3000
60x = 3600 Divide by 60
x = 3600/60
x = 60

He needs to mix 60 pounds of 60 cent nuts