A turtle climbs 40 meters every 3 minutes.itretires for 2 minutes_英语解答

A turtle climbs 40 meters every 3 minutes.itretires for 2 minutes after climbing for 3 minutes .How many minutes does it need to climb for 500 meters?

人气：328 ℃　时间：2020-06-11 18:28:29

解答

SPEED=40M/3MINS
cycle=500/(40/3)=37.5
35times*(40/3)=466.67m
(500-466.67)/(40/3)=2.5mins
total time=35times*5mins/time+2.5mins=177.5mins