Angelica starts on a walk at 5 kilometres an hour. Three hours later, on the same route, Janelle starts riding her bicycle at 11 kilometres an hour. When will Janelle overtake Angelica?

1 Answer
Jul 12, 2018

Angelica starts on a walk at 5 kilometres an hour. In 3hrs she walks 15km. =

on the same route, Janelle starts riding her bicycle at 11 kilometres an hour. If Janelle overtakes Angelica after t hr,then

11xxt-5xxt=15

=>6t=15

=>t=15/6=2.5 hr