Gamergirl1455idn
Answered

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Two runners start the race at the same time. The first runner's speed is
[tex] \frac{4}{5} [/tex]
of the speed of the second runner. After 30 minutes, the runners are 2 miles apart. What is the speed of each runner?​

Sagot :

Raphealnwobiidn

The speed of the first runner is 1.78 mph while for the second runner is 2.22 mph

Speed

Speed is the ratio of total distance to total time taken. It is given by:

Speed = distance / time

Let a represent the speed of the first runner and b for the second runner. Hence:

a = (4/5)b

After 30 minutes (0.5 hour), the runners are 2 miles apart, hence:

a = d₁ / 0.5

d₁ = 0.5a

Also:

b = d₂/0.5

d₂ = 0.5b

d₁ + d₂ = 2, hence:

0.5a + 0.5b = 2

0.5(4/5)b + 0.5b = 2

b = 2.22 mph

a = (4/5) * 2.22 = 1.78 mph

The speed of the first runner is 1.78 mph while for the second runner is 2.22 mph

Find  out more on Speed at: https://brainly.com/question/13943409

Jameslee2798idn

Answer:

16 mph and 20 mph (please mark brainiest)

Step-by-step explanation:

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