Im assuing the 0.6 is a percentage and not the number of passes then :
100% - 60% = 40%
9/15 becomes 90/15 but now u have a point on ur answer so it would be .6 as 15 times 6 equals 90
Add all of the hours together than divide by 5 should get 40
Answer:
so that's how you plot their intersection
Answer:
Area is about 1520.53
Step-by-step explanation:

A = 
A ≈ 1520.53