Question

a man completes a journey in 10 hours he travels first half of the journey at the rate of 21 km/he and second half at the rate of 24 km/hr find the total journey in km​

Answer 1

Answer:

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 the first half = 21x [because, distance = time*speed]

Distance covered in the the second half = 24(10 - x)

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

So,

21x = 24(10 - x)

=> 45x = 240

=> x = 16/3

Total Distance = 2*21(16/3) = 224 Km [multiplied by 2 as 21x was distance of half way]

hope it is helpful for you