Answer:
16.33%
Explanation:
For the coming quarter the Gross margin is also likely to increase by 20% because Sales will actually increase by 20% based on the given data and also on the assumption that the new product will be equally profitable. In this way the Gross margin must increase by 20% as well. However the quarterly rise in Gross margin would be 5% (20% divided by 4).
Gross Margin 1 15.40%
Gross Margin 2 15.50%
Gross Margin 3 15.60%
Gross Margin 4 15.70%
Average Gross Margin 15.55%
20% increase in Gross Margin 18.66%
5% increase in Gross Margin 16.33%