Verified Answer :

Apocrophon

\(\frac{distance}{hour} =\frac{680km}{1 hour} = \frac{x}{2\frac{1}{4}}\\ \frac{680}{1} = \frac{x}{2\frac{1}{4}}\\ 680*2\frac{1}{4}=1*x\\ 1530=x\)

The plane can travel 1530km in \(2 \frac{1}{4}\)hours.

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