You can
put this solution on YOUR website!Speed of movement of sea-horse = 10.5 inches/minute =

inches/hour =

feet/hour =

yards/hour = 17.5 yards/hour
Thus, the sea horse can move 17.5 yards in 1 hour.
So the sea horse can move 1 yard in 1/17.5 hour.
So the sea horse can move 6 yards in (1*6/17.5) hour = 0.3428 hour = 20.57 minutes.