Question

A snail can move "i" inches in "m" minutes. At this rate, how many feet can it move in "h" hours?

5hi/m

60hi/m

hi/12m

5m/hi

5him

Answer 1

how many minutes are there in an hour?

Answer 2

60

Answer 3

right! if the snail can move i inches in "m" minutes. how many inches can it move in 60 minutes?what mathematical operation we use here?

Answer 4

\[1m=1m\times\frac1{ 60}\frac {h}m=\frac 1{60}h\]

\[1i=1i \times\frac1{ 12}\frac {ft}i=\frac 1{12}ft\]

\[\frac im=\frac{1/12~ ft}{1/60~ h}\]
\[\frac{12}{60}\frac im=\frac{ft}{h}\]