how far is it three times around ?
Once you have that distance, and you know Time = Distance/rate
you can do it.
The leanth and breadth of a playground are 80m and 35m respectively.
(i)-How long will a boy take to go three times round the field, if he walks at rate of 1.5m per second?
2 answers
Perimeter= 2(l+b)
2(80+35)
115*2= 230
Distance covered in one round= 230 meteres
Distance covered in three rounds= 230*3
690 meteres
1/1000* 230
23/100
23/100* 60
69/5
13.8 minutes
800 seconds
2(80+35)
115*2= 230
Distance covered in one round= 230 meteres
Distance covered in three rounds= 230*3
690 meteres
1/1000* 230
23/100
23/100* 60
69/5
13.8 minutes
800 seconds
2 answers