Which child had the greatest motion???

Question

a)harry D=25m,b)mary D=35m,c)john D=40m

d)sarah D=300cm

how would you know the above children moved?

Answer 1

I'm assuming here that D = Distance.  In that case the answer would be:

C) John

The reason being that when you put all measurements in the same unit m(meters) the come out to 25, 35, 40 and 3 respectively (100cm = 1m).