Question

S.
A bus takes 6 hours to cover a certain distance with a speed of 30 km/hr. What
speed the bus should have to cover the same distance in 4 hours?​

Answer 1

Answer:

let in hour bus travel 30 km with his average speed 30km/hour

then in 6 hour it travels 6×30=180km

if he want to go in 4 hour then it average speed is

speed=distance/time

speed=180÷4

speed=45

hence it average speed to cover same distance in 4 hour is 45km/hr

Answer 2

Answer:

Speed = 45 km/hour

Step-by-step explanation:

Speed of bus = 30 km/hr

Time taken by bus = 6 hours

Distance = ?

Using formula-

Distance = Time × Speed

              = 6 × 30

Distance = 180 km

Speed of bus to cover this distance in 4 hours-

Speed = $\dfrac{Distance}{Time}$

           = $\dfrac{180}{4}$

Speed = 45 km/hour