Question

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?

Answer 1

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