Answer:
25%
Explanation:
Using simple trend, to calculate the predicted sales/profit of 2018, we use;
(percentage sales of 2017 - percentage sales of 2016) ÷ percentage sales of 2016.
we have,
percentage sales in 2018 = 20 - 16
16
= 4
16
= 0.25.
Percentage sales in 2018 = 25% i.e 0.25 x 100%
Cheers.