This is quite simple. Toby ran 5 units, and it says Kate ran 4 times Toby ran meaning the person ran [tex]4 * 5[/tex] so 20 units. Then it says Jim ran 3 times the units Kate ran. Meaning it would be [tex]3 * 20[/tex] which is 60 units. Hence Jim ran 60 units or 60 miles. :D
