Sasha runs at a constant speed of 3.8 meters per second for 1/2 hour.Then she walks at a constant rate of 1.5 meters per second for 1/2 hour.How far did Sasha run and walk in 60 minutes?

Respuesta :

Sasha runs at a constant speed of 3.8 meters per second for 1/2 hour.Then she walks at a constant rate of 1.5 meters per second for 1/2 hour , 9,540 meters Sasha run and walk in 60 minutes

Given :

              V1 = 3.8 m/s

               t1 = 1/2 = 30 x 60 = 1,800 seconds.

Here,

V1 = Running speed of Shasha.

t1 = Time

→ She walks at distance V2 = 1.5 m/s for t1 = 1,800 seconds.

  Distance of Shasha :

  S1 = V1 x t1

  S1 = 3.8 x 1,800

  S1= 6,840 meters

→She walks at distance V2 = 1.5 m/s for t2 = 1,800 seconds.

 Distance of Shasha:

 S2 = V2 x t2

 S2= 1.5x 1,800

 S2= 2700 meters

Then, The total distance she runs & walks

S = S 1 + S 2

S= 6,840 + 2,700

S= 9540 meters

Therefore,  9,540 meters Sasha run and walk in 60 minutes

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