Answer:
54
Step-by-step explanation:
4.5 ×12 and then you get the answer
The descent of the balloon would take 14 minutes
To find the answer to this problem, take the elevation change (315) and then divide it by the rate of descent (22.5)
100, 3/250 because 10x10 is 100 and 0.012 converted into fraction is 3/250
