Question

2 It takes Aisha 84 seconds to run one lap of an athletics track.
It takes Brenda 96 seconds to run one lap of the athletics track.
They set off from the start line at the same time,
a After how many seconds will they cross the line together for the
first time? (Assume they keep running at the same speed.)​

Answer 1

Step-by-step explanation:

Just circumference. Neither time nor speeds............Insuff

Fact 1: As we have rate of everyone, we can reach the time required. I will construct a table for every time interval (60 sec) to calculate the laps run by Tim and Glenn

Glenn will run 1 lap after 60 sec, 2 laps after 120 sec.............4 laps after 240 sec.

Time will run 1.25 lap after 60 sec, 2.5 lap after 120 sec ........5 laps after 240 sec.

Tim will take 240 second to run exactly one lap further than Glenn.