1/2 hour = 30 mins
30 x 2 = 60 mins = 1 hour
4.5 x 2 = 9
9mph
Answer:
22
Step-by-step explanation:
Number of Even from 0 to 40: 21 even numbers
It is possible to get all even numbers before getting an odd number. So,
Minimum number of integers that must be selected: 21 + 1 = 22