Question

Out of 1900 km visual travelled some distance by bus and some by aeroplane bus travels with an average speed of 60 km per hour and the average speed of aeroplane is 700 km per hour. It takes 5 hours to complete the journey. Find the distance visual travelled by bus

Answer 1

if u see in 2.5 hours aeroplane travels 700 x 2.5 , that is 1750 and in the remaining 2.5 hours the bus travels , 60 x 2.5 that is 150 km , 1750 + 150 is 1900,the bus travelled 150 kms, hope this helped you

Answer 2

Given:

Total distance = 1900 km

Distance by bus = bus km

Distance by airplane = ( 1900 - bus ) km

Total time = 5 hrs

Speed of the bus = 60 km / hr

Speed of the airplane = 700 km / hr

To find:

The distance traveled by bus.

Solution:

Time traveled in bus = Bus / 60  

Time traveled in airplane = ( 1900 - bus ) / 700

Total time = Time traveled in bus + Time traveled in airplane

Total time = Bus / 60 + ( 1900 - Bus ) / 700

Substituting,

Bus / 60 - Bus / 700 + 1900 / 700 = 5

( 35 * Bus - 3 * Bus ) / 2100 = 5 - 19 / 7

32 * Bus = 2100 * ( 35 - 19 ) / 7

32 * Bus = 300 * 16

Bus = 4800 / 32

Hence,

Bus = 150 km

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