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nekit [7.7K]
2 years ago
5

Two runners start the race at the same time. The first runner's speed is

Mathematics
2 answers:
ki77a [65]2 years ago
8 0

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

<h3>Speed</h3>

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: brainly.com/question/13943409

Lesechka [4]2 years ago
3 0

Answer:

16 mph and 20 mph (please mark brainiest)

Step-by-step explanation:

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