Question

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

Answer 1

Answer:

Let the distance travelled by bus be x kms and by aeroplane be

y kms

by first condition

THIS IS EQUATION 1

x + y = 1900

by second condition

now

speed = \frac{distance}{time}

time= \frac{distance}{speed}

for bus

time = \frac{x}{60}

for aeroplane

time = \frac{y}{700}

But it is given that journey was completed in 5 hours

thus

THIS IS EQUATION 2

\frac{x}{60} + \frac{y}{700} = 5

By solving equations 1 and 2 for x and y

x= 150

y=1750

ANS

Vishal travelled 150 kms by bus