Question

A scoooterist travels at 36 km/hr for 5 hours and at 45 km/hr for 4 hours . find his average speed for the whole journey.


i want answer in step by step then i will make brainlest ​

Answer 1

Answer:

9 hours

Step-by-step explanation:

add 5+4 ( 9 )

so you have to just add 5+4

Answer 2

$\sf \green{ Distance \: travelled = Speed × Time}$

$\sf \green{ \therefore \: Distance \: travelled \: at \: 36 km/hr = 36 × 5 = 180 km }$

$\sf \green{ Distance \: travelled \: at \: 45km/hr = 45 × 4 = 180 km }$

$\sf \therefore \: Total \: Distance \: travelled = 360 km/hr$

$\sf \green{ \frac{360}{9} = 40km/hr}$

Therefore average speed is 40 km/hr.