Answer:
358.33 times
Explanation:
The computation of the simple forecast combination is shown below:
= (Forecast sales done by Mary + Forecast sales done by Susan + Forecast sales done by Sarah) ÷ (Total number of observations)
= (341 + 535 + 199) ÷ (3)
= (1,075) ÷ (3)
= 358.33 times
We simply divided the total sales forecasted done by each one by the total number of observations