Answer:
A
Step-by-step explanation:
Estimate 189 to the nearest tenth which would be 190. And then do the same for 643 which would be 640. 640-190= 450
You just add all of the numbers up.
Answer:
5 hours
Step-by-step explanation:
1.5 (hours) / 3(cars) = 0.5 hours per car
0.5 x 10 = 5