If a snail crawls 12cm in 60 seconds then it's average speed in mm s-1

1.	If a snail crawls 12cm in 60 seconds then it's average speed in mm s-1 is
A.	5 mm s-1
B.	2 mm s-1
C.	20 mm s-1
D.	10 mm s-1
Answer» C. 20 mm s-1

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