Question 18163
virginia peanuts =10 lbs
cost of virginia peanuts = $3.5
total cost of virginia Peanuts = $35

let the spanish peanuts be x lbs
cost of spanish peanuts = $3
total cost of spanish Peanuts = $3x

total quantity = 10 + x
average cost of totol quantity = $3.4
total cost =(10+x)(3.4)=cost of virginia Peanuts + cost of spanish Peanuts 

(10+x)(3.4)= 35 + 3x
34 + 3.4x = 35 + 3x
3.4x - 3x = 35 - 34
.4x = 1

x = 1/0.4
x = 10/4
x = 2.5 

2.5 lbs 

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