Jaipratap11
contestada


A motorcyclist drives from a to b with the uniform speed of 30 km/h-1 and returns back with the speed of 20 km/h-1.find the average speed?

Respuesta :

MR0000
30+20 =50
For average 50/2=25
alimohammed
Average speed= total distance/total time  

FIRST JOURNEY

A..................s=30km/hr..............d=x......................B

RETURN JOURNEY

B...................s=20km/hr..............d=x......................A

Total Distance=2x

Total Time= x/30km/hr + x/20km/hr = 5x/60

AVS=TD/TT      2x/5x/60   2x divide 5x/60 ANSWER is 24km/hr

Otras preguntas