Ky ran 400 m in half the time it took Cy to run 1 km . What is the ratio of Ky's speed to Cy's speed?
A.
\(2: 5\)
B.
\(1: 2\)
C.
\(4: 5\)
D.
\(4: 1\)
Exam No：2020 First Round Grade 6 Year：2020 Question No：26
Answer:
C
Knowledge points:
G6 - Arithmetic - Rate, Speed, & Time Problems
Solution:
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