Question

a bus travels with a speed of 10 km/h in the first
15 minutes, goes 5 km in the next 15 minutes, 15
in the next 15. 10 km in the next 15. What is
the average speed of the bus in bolometre per hour
for the journey described?
(a) 45 kmph
(b) 32 50 kmph
(c) $0.50 kmph (d) 40 kmph
​

Answer 1

Answer:

32.50 kmph

Step-by-step explanation:

Distance travelled in the first 15 minutes or 0.25 hr= speed× time= 10×0.25= 2.5km

Total distance travelled by the bus =  2.5 + 5 + 15 + 10 = 32.5 km

Total time taken = 15 + 15 + 15 + 15 = 60 min

                            = 1 hr

Average speed = total distance travelled÷ total time taken

                          = 32.50 kmph