Answer:
4 hours
Step-by-step explanation:
Distance covered = 30 km
Usual Speed of both = 10km/hr
Justin's speed = 1/2 * 10 = 5km/hr
Ari's speed = 3/2 * 10 = 15 km/hr
Time taken = distance / speed
Justin's time = 30 / 5 = 6 hours
Ari's time = 30 / 15 = 2 hours
Time difference = (6 - 2) = 4 hours
Answer:
c
Step-by-step explanation:
A= 2bh/1-2h idk of I’m right or not
Answer:
301
Step-by-step explanation:
The correct option is A.
One of the basic feature of an experiment is the selection of participants by means of random method. It is very important to select participants randomly in order to avoid experimental bias that may occur as a result of the participants not been an exact representation of the concerned population.