Answer:
Orange per pound= $4.86
Explanation:
Giving the following information:
Decrease rate= 20%
Price this week= $3.89 per pound
To calculate the price of oranges last week, we need to use the following formula:
Orange per pound= price this week / (1 - decrease rate)
Orange per pound= 3.89 / (1 - 0.8)
Orange per pound= $4.86