Question

A cyclist covers first 10 km in 45 minutes, next 10 km in 1 hour and last 10 km in 1 hour 15 minutes. Find the average speed of the cyclist in the whole journey.
please explain full​

Answer 1

total distance covered by the cyclist = 10 + 10 + 10 = 30 km

total time taken by the cyclist = 45 + 60 + 75 = 180 mins = 3 hours

average speed of the cyclist = 30/3 = 10 km/h

therefore, the speed of the cyclist is 10 km/h

Answer 2

Answer:

10km/h

Step-by-step explanation:

First lets take the distances as

D¹=10km

D²=10 km

D³ =10 km

Also,

D¹+D²+D³= 10+10+10 =30km

Now lets take the time as

T¹= 45 mins

T²= 1 h =60mins

T³ = 1h 15 mins = 75 mins

Now,

T¹+T²+T³= 45+60+75=180mins =3h

Now,

Average speed = total distance/total time

D¹+D²+D³/T¹ +T²+T³

30km/3h

10km/h