Answer: 130 candy bars
Explanation:
In total, the amount of money they will need to raise is:
= 450 + 325
= $775
They have 6 weeks to raise this money so the amount they have to raise per week is at least:
= 775/6
= $130
The candy bars cost $1 each. They will therefore have to sell a minimum of 130 candy bars each week to afford the trip.