+0  
 
+1
72
3
avatar+71 

Sloan the sloth crawls at 100 meters per hour when crawling uphill, 120 meters per hour when crawling across flat ground, and 150 meters per hour when crawling downhill. One day, Sloan crawls across the forest floor from a tree stump to a spring, and then takes the same route in reverse to return to the tree stump. What was Sloan's average speed during the entire round trip?
 

 Jun 22, 2021
 #1
avatar+33360 
+3

Let's give some distances    100 up    100 flat   100 down      meters

    then return                        100 up    100 flat   100 down

 

 

time required   (distance/rate = time  )    200/100  + 200/120  + 200 / 150    = 5 hr

 

              distance 600

 

 

distance / time = average speed  =       600/5 = 120 m/s   

 Jun 23, 2021
 #2
avatar+71 
+2

can u explain where the 200 comes from?

justinwh333  Jun 23, 2021
 #3
avatar
+2

the 200 comes from adding the 100 together both there and back

Guest Jun 25, 2021

5 Online Users

avatar