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Answer:
270
Step-by-step explanation:
To solve this, we use the unitary method.
Distance flown in 20 sec = 180
Distance flown in one sec = [tex]\frac{180}{20}[/tex] = 9
Thus, distance flow in 30 secs = 9 × 30 = 270
I think this is the answer. Hope its correct :)
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