CTS Company Numerical Ability Time Distance and Speed

You drive to the store at 20 mph and return by the same route at 30 mph. Discounting the time spent at the store, what was your average speed?

Read Solution (Total 4)

average speed=total distance/total time
let distance to store be x
then, total time =(x/20)+(x/30)=x/12
and, total time =(2x)
so average speed= 2x/ (x/12)=24kmph
12 years agoHelpfull: Yes(12) No(1)

(2((20*30)))/20+30=24
formula 2(speed1*speed2)/speed1+speed2
this is applicable only if the persons travel the same route
11 years agoHelpfull: Yes(8) No(0)
Ans = 25mph
Exp = (30mph)+(20mph)/2
50mph/2
=25mph

$ Answered by Vignesh(India, TamilNadu) $
13 years agoHelpfull: Yes(1) No(8)
Ans = 25mph
Exp = (30mph)+(20mph)/2
50mph/2
=25mph

$ Answered by Vignesh(India, TamilNadu) $
13 years agoHelpfull: Yes(0) No(6)

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