# How do you find the unit rate for a snail that can go 13 inches in 20 seconds?

$13$ inches in $20$ seconds is equivalent to $39$ inches/minute.
Since there are $3$ period of $20$ seconds in a minute
$\left(13 \text{ inches")/(cancel(20)cancel(" seconds")) xx (cancel(60)^3cancel(" seconds"))/(1" minute") = (39" inches")/("minute}\right)$