Question

a can complete a journey in 10 hours.a travel the 1st half if the journey at speed of 21 km/hour and balence at 24 km/hour .find the total distance in km?​

Answer 1

Answer:

Step-by-step explanation: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]