Question

It takes Shweta 45 minutes to walk 5 km. How long would it take her to walk 4 km at the
same speed? how far would she go in 90 minutes?


pls answer in words pls.....​

Answer 1

Given data : Shweta take 45 minutes to walk 5 km.

To find : Time taken by Shweta to walk 4 km at the same speed and distance coverd by Sweta in 90 minutes with same speed ?

Solution : according to given, distance covered by shweta is 5 km in 45 minutes.

Here,

→ distance = 5 km

→ time = 45 minutes = { 45/60}hr = 0.75 hr

Now, to find speed of Shweta we use formula of speed

→ speed = distance/time

→ speed = 5/0.75

→ speed = 20/3

→ speed = 6.67 km/hr

Now, to find time taken by Shweta to walk 4 km at the same speed {6.67 km/hr}.

→ speed = distance/time

→ 6.67 = 4/time

→ time = 4/6.67

→ time = 0.5997 hr

Now, to find distance coverd by Sweta in 90 minutes with same speed {6.67 km/hr}.

Here, 90 minute = {90/60}hr = 1.5 hr

→ speed = distance/time

→ 6.67 = distance/1.5

→ distance = 6.67 * 1.5

→ distance = 10.005 km

Answer : Hence the time taken by Shweta to walk 4 km at the same speed is 0.5997 hr and distance coverd by Sweta in 90 minutes with same speed is 10.005 km .