Question

It takes ken 80 seconds to complete a lap and hamid 60 seconds to complete a lap .they start at the same time how many laps will they have run till the next meet at the start line

Search instead for it takes ken 80 seconds to complete a lap and hamid 60 seconds to complete a lap .they start at the same time how many laps will they have run till they next meet at the start line

Answer 1

Answer: Ken will run 3 laps and Hamid will run 4 laps till they next meet at the start line.

Explanation:

Given: It t takes Ken 80 seconds to complete a lap and Hamid 60 seconds to complete a lap .

To find when they, meet we need to find the least common multiple of 80 and 60.

Since
`80=4*20\\60=3*20`

Therefore, LCM(60,80)=
`4*3*20=240`

Thus they will meet after 240 seconds.

So the number of laps completed by Ken=
`(240)/(80)=3`

The number of laps completed by Hamid=
`(240)/(60)=4`