Question 1173877
<pre><font face = "Tohoma" size = 3 color = "indigo"><b> 
Hi,
A snack food is made by mixing 4 lb of popcorn that costs $0.80 per pound with caramel that costs $2.90 per pound. 
how much caramel {{{highlight_green(x)}}} is needed to make a mixture that costs $1.70 per pound?
Let x be the lbs of caramel needed.
Write as You read:
 4(.80) + x(2.90) = (x+4)1.70        
 3.2 + (2.90)x = 1.70x +6.8
        (1.20)x = 3.6
              x = 3lb  caramel is needed
Checking our Work:
 3.20 + 8.70 = 11.90 = 7*1.70   checks.
Wish You the Best in your Studies.