Question

a bus covers 630 km in 9 hours if it completes the first two third of the journey at 60 km per hour calculate its speed for the rest of the journey

Answer 1

Answer:

105 km/h

Step-by-step explanation:

Total distance = 630 km

Total time taken = 9 hours

Find the time taken for the first part of the journey:

Distance = 2/3 x 630 = 420 km

Speed = 60 km/h

Time taken = Distance ÷ Speed

Time taken = 420 ÷ 60 = 7 hours

Find the speed of the second part of the journey:

Distance = 630 - 420 = 210 km

Time taken = 9 = 7 = 2 hours

Speed = Distance ÷ Time Taken

Speed = 210 ÷ 2 = 105 km/h

Answer: The speed for the second part of the journey is 105 km/h

Answer 2

SOLUTION--
630/3= 210.
IF BUS COVERS 210*2, I.E. , 420KM AT 6O KMPH, THEN
TIME= 420/60 = 70 MINUTES.
9 HOURS= 9*60 = 540 MINUTES.
540-70= 470.
SPEED= 210/(470/60) = 210/7.834 = 3KMPH OR SO.
THERE'S NO WHOLE NUMBER ANSWER TO THIS QUESTION. ITS IN MY TEXTBOOK. HOPE IT HELPS.