Answer:
2.5 pounds of pineapple and 2.5 pounds of banana chips should be used.
Step-by-step explanation:
Let the amount dried pineapple and banana chips to be added in the mix x.
Let the amount of raisins added to the mix = 2 pounds
A pound of dried pineapple bits sells for $6.99.
A pound of dried banana chips sells for $4.39
A pound of raisins sells for $2.89
x × $6.99 +x × $4.39 + 2 × $2.89 = (x + x + 2) × $4.89
2.5 pounds of pineapple and 2.5 pounds of banana chips should be used.