Question

A black mamba snake can travel 28 ft./s how far can a black mamba travel In 60 seconds

Answer 1

1680 ft./60s

28 ft in a second, so multiply 28 by 60 and you get 1680.

Answer 2

So if they can do $\frac{28 ft}{1 s}$, you need to multiply 28 by 60 to cancel out the seconds,

$\frac{28 ft}{1 s}$ x $\frac{60 s}{1 }$

Multiplying 28 and 60 together gives you,

1680 ft