A turtle climbs 40 meters every 3 minutes.itretires for 2 minutes after climbing for 3 minutes .How many minutes does it
问题描述：
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?
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