Question

a truck covers 10 kilometre with a speed of 50 kilometre per hour and for the 10 kilometre with the speed of hundred kilometre per hour then what would be the average speed of the truck

Answer 1

12 minutes it hope that my answer is help you

Answer 2

HEY BUDDY

SPEED = DISTANCE  / TIME

TIME = DISTANCE / SPEED

SO,

T1 = 10 KM / 50 KM PER HOUR

T1 = 1 / 5 HOUR -----------------------(i)

now ,

T2 = 10 KM / 100 KM PER HOUR

T2 = 1 / 10 HOUR --------------------(ii)

now , adding (i) and (ii)

T1 + T2 = 3 /10 HOUR

TOTAL DISTANCE  = 10 KM + 10 KM = 20 KM

NOW , AVERAGE SPEED = TOTAL DISTANCE / TOTAL TIME TAKEN

AVERAGE SPEED = 20 * 10 / 3 = 200/3 = 66.67 KM/H