Answer:
50m
Explanation:
=20=4
x=10
Cris cross method
=20×10=4x
200=4x
x=200/4
x=50m
In 10 seconds it can swim 50 meters.
Since 20 meters is 4 seconds, 40 meters is 8 seconds, and 10 meters is 2 seconds. In total 10 seconds. 50 meters.
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