Answer:
35/11 sec/min
Step-by-step explanation:
Given data
Total distance= 100meter
distance of one lap= 50meters
distance covered by Andrew
=7/11 0f 100
=700/11 meters
Time taken
=1/3 of 60
=60/3
=20 seconds
Hence the rate is
rate= distance/time
rate= 700/11/20
rate= 700/11*1/20
rate= 700/220
rate= 70/22
rate= 35/11 sec/min
