Question

a bus travels first 100 km with the speed of 50km/hr and next 80km in the speed of 40km/hr calculate the average speed of the bus

Answer 1

HEY BUDDY..!!

HERE'S THE ANSWER..

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♠️ Average speed of a vehicle is defined as ratio of total distance traveled to the total time taken , i.e

✔️ Avg. Speed = ( D1 + D2 ) / t1 + t2

▶️ First we'll time 1 and time 2

=> Speed = Distance / time

=> time 1 = Distance / Speed

=> time 1 = 100 / 50

=> time 1 ( t1 ) = 2 Hour

✔️ time 2 = Distance / Speed

=> time 2 = 80 / 40

=> time 2 ( t2 ) = 2 Hour

♠️Avg. Speed = ( D1 + D2 ) / t1 + t2

=> Avg. Speed = ( 100 + 80 ) / 2 + 2

=> Avg. Speed = ( 180 ) / 4

=> Avg. Speed = 45 Km / h

HOPE HELPED..

JAI HIND..

:-)

Answer 2

t1 = d1 / s1

t1 = 100 / 50

t1 = 2 h



t2 = d1 / s1

t2 = 80 / 40

t2 = 2 h


avg speed = ( 100 + 80 ) / 2 + 2

= 180 / 4

= 45 km/h