Sandra hikes 9/10 mile every 30 minutes, or 1/2 hour.
How many miles does she hike each hour?
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9/10 miles per 30 minutes
for example 9/ 10 per 30 minutes
It means that in an hour it will be twice 30 minutes
(9/10) * 2 = 18/10
= 9 / 5
= 5/5 +4/5
= 1 4/5