Answer:
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Step-by-step explanation:
2a) 30
2 x 15
3 x 5
30=2x3x5
2b) 60
6 x 10
2x3 2x5
60=2x3x2x5
Step-by-step explanation:

Divide the number of colas by the percentage that was colas:
49/0.35 = 140
There were 140 total drinks.
There is a 35% chance she will arrive after 8:30AM