Question

Two cars A and B cover the distance 450 km in 5 hours and 9 hours respectively. Compare their speed.​

Answer 1

Provided that:

Two cars A and B cover the distance 450 km in 5 hours and 9 hours respectively. Compare their speed.

Using concept: Formula to calculate the speed.

Using formula:

• ${\small{\underline{\boxed{\pmb{\sf{Speed \: = \dfrac{Distance}{Time}}}}}}}$

Required solution:

★ Firstly let us calculate the speed of car A then we will move to car B!

$:\implies \sf Speed \: = \dfrac{Distance}{Time} \\ \\ :\implies \sf Speed \: = \dfrac{450}{5} \\ \\ :\implies \sf Speed \: = 90 \: kmh^{-1}$

• Therefore, speed of car A is 90 kilometre per hour.

★ Now let us calculate the speed of car B by using suitable formula!

$:\implies \sf Speed \: = \dfrac{Distance}{Time} \\ \\ :\implies \sf Speed \: = \dfrac{450}{9} \\ \\ :\implies \sf Speed \: = 50 \: kmh^{-1}$

• Therefore, speed of car B is 50 kilometre per hour.

★ Now let's compare!!!

→ 90 kmph > 50 kmph

→ Car A's speed > Car B's speed

→ Difference between their speed = 90 - 50 = 40 kilometre per hour

• Therefore, Car A attain more speed of 40 kmph as compared to Car B.

Answer 2

Answer:

First we calculate the speed of a

speed of a = dist / time taken

speed of a = 450 km / 5

speed of a = 90 km/h

Now we calculate the speed of b

speed of b = dist / time taken

speed of b = 450 km / 9

speed of b = 50 km/h

we see that

Difference between their speed = 90 - 50 = 40 kilometre per hour

Therefore, Car A attains more speed of 40 km/h as compared to Car B.