A man covered a certain distance at some speed. Had he moved 3 kmph faster, he would have taken 40 minutes less. If he had moved 2 kmph slower, he would have taken 40 minutes more. The distance (in km) is:

$35$

$36\frac{2}{3}$

$37\frac{1}{2}$

$40$

Please do not use chat terms. Example: avoid using "grt" instead of "great".