A pilot flew 80 km . He flew the first 4 minutes at half speed and the second 4 minutes at full speed. The full speed of the plane is
A.
\(400 \mathrm{~km} / \mathrm{hr}\)
B.
\(600 \mathrm{~km} / \mathrm{hr}\)
C.
\(800 \mathrm{~km} / \mathrm{hr}\)
D.
\(1000 \mathrm{~km} / \mathrm{hr}\)
Exam No：2022 First Round Grade 5 Year：2022 Question No：32
Answer:
C
Knowledge points:
G5 - Arithmetic - Rate & Ratio Problems
Solution:
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