Question

6. Out of 1900 km, Vishal travelled some distance
by bus and some by aeroplane. Bus travels with
average speed 60 km/h and the average speed of
aeroplane is 700 km/h. It takes 5 hours to
complete the journey. Find the distance, Vishal
travelled by bus.​

Answer 1

Answer:

Hello mate ⬇️

Step-by-step explanation:

Let the distance Vishal travelled by bus be x km and by aeroplane be y km.

According to the first condition,

x + y = 1900 …(i)

Time = DistanceSpeedDistanceSpeed

∴ Time required to cover x km by bus = x60x60 hr

    Time required to cover y km  by aeroplane =   y700y700 hr

According to the second condition

      x60x60 + y700y700 = 5

∴  700x+60y60X700700x+60y60X700 = 5

∴   700x + 60y = 5 x 60 x 700

∴   70x + 6y = 21000      ...(iii)  [ Dividing both sides by 10 ]

Multiplying equation (i) by 6, we get

6x + 6y= 11400 …(iii)

Subtracting equation (iii) from (ii), we get

∴           x = 9600/64

∴           x = 150

∴ The distance Vishal travelled by bus is 150 km.

hope it helps you ❣️