Question 1127324
.
<pre>

You need to find two divisors of the number 30  (two velocities), that differ by 5 and produce quotients that differ by 1  

    (the time difference).



The divisors  10 and 15 are good candidates, that produce the velocities 10 and 15 kilometers per hour.     <U>Answer</U>
</pre>

Mental solution.