Answer:
I think b, but I may be wrong
Answer:
6
Step-by-step explanation:
Deisha's build rate = 1 fence per 15 hours = 1/15 fences per hour
Travis's build rate = 1 fence per 12 hours = 1/12 fences per hour
Working together, their combined rate is 1/15 + 1/12 = 3/20 fences per hour
So it takes them 20/3 = 6 2/3 hours per fence
U have a 90% chance of picking an orange marble, 10% of picking a different color
Hundreds place!
6 is ones
3 is tens
8 is hundreds