Final answer:
The cost for 40 candy bars would be $50, calculated by first finding the cost of one candy bar ($1.25) and then multiplying by 40.
Step-by-step explanation:
If 20 candy bars cost $25, we can calculate the cost of one candy bar and then determine how much 40 candy bars would cost. First, we find the cost of one candy bar by dividing the total cost by the number of candy bars:
Cost of one candy bar = $25 ÷ 20 = $1.25.
Now that we know one candy bar costs $1.25, we can calculate the cost of 40 candy bars:
Cost of 40 candy bars = 40 × $1.25 = $50.
Therefore, 40 candy bars would cost $50.