Other
Company
Category
you drive to store at 20 mph return by same route at 30 mph.Discounting time spent at store what was your average speed
Read Solution (Total 2)
-
- 24 mph
average speed =2xy/x+y
x=speed while covering one distance and y= speed covering while another distance
so avg speed = 2*30*20/30+20=24 - 8 years agoHelpfull: Yes(1) No(0)
- avg speed=(total distance/total time taken)
t1=d/20
t2=d/30
avg speed=2d/(t1+t2)
=putting the value of t1 and t2
=24 mph - 8 years agoHelpfull: Yes(0) No(0)
Other Other Question