Question

A man completes a journey in 10 hours he travel first half of the journey at the rate of 21 km/hr and second half at the rate ofb24 km/hr find the total journey in km .​

Answer 1

Answer:

Given : -

• A man completes a journey in 10 hours .

• he travel first half of the journey at the rate of 21 km/hr .

• second half at the rate of 24 km/hr

To Find : -

• find the total journey in km .

Solution : -

Let time taken to travel the first half = x hr

Then time taken to travel the second half = (10 - x) hr

Distance covered in the first half = 21x

[because, distance = time*speed]

Distance covered in the second half

= 24(10 - x)

Distance covered in the first half = Distance covered in the second half

So,

➻ 21x = 24(10 - x)

➻ 45x = 240

➻ x = 240/45

➻ x = 16/3

Total Distance

= 221 × (16/3)

= 224 Km