She can bike 25 kilometers in one hour.
Step-by-step explanation:
Given,
Distance by walk in 0.5 hours = 5 kilometers
Distance by bike in 0.8 hours = 20 kilometers
Distance in 1 hour = [tex]\frac{1}{0.8}*20\\[/tex]
[tex]Distance\ in\ one\ hour=\frac{20}{0.8}\\Distance\ in\ one\ hour= 25\ km[/tex]
She can bike 25 kilometers in one hour.
Keywords: distance, multiplication
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