Answer:
D.
Step-by-step explanation:
The astroid is 100,000,000 miles away.
It's traveling at a speed of 100,000 miles per day.
100,000,000 ÷ 100,000 = 1,000
1,000 days.
The diagram with 15 shaded and 5 unshaded because 15/20 multiplies to 75/100 or 75%
