Question 856902
I will assume this is a trick question.  Is Bernardo a St Bernard or  a person? If he is a St Bernard then he runs all 4 feet.  If he is a person, he runs 2 feet which is all he has!
Otherwise he runs 10*900=9000 feet which is almost 1.7  miles (5280 ft is one mile) in 10 minutes which is pretty fast