Answer:
The sales revenue will increase by 60%
Explanation:
Let's work this as the amount of sales were 1 units:
Price when to 3.10 dollars from 1.55
And quantity from 1 untis to "0.8 unit"
So revenue before price changes: 1.55 x 1 = 1.55
Revenue after price changes: 3.10 x 0.8 = 2.48
The percentaje in sales revenue will be.
new price sales/ old price sales - 1 = 2.48 / 1.55 -1 = 0.6
We can conclude the sales revenue will increase by 60%