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Deb can run 5 kilometers in 20 minutes. If she runs at the same speed, how long would it take Deb to run 3 kilometers?

Solución

Deb can run 5 kilometers in 20 minutes. If she runs at the same speed, how long would it take Deb to run 3 kilometers?

Solución

trip 2 time : 12

Pasos de solución

Given Time:

trip 1 : 20

Given Distance:

trip 1 : 5

trip 2 : 3

Represent the speed in terms of

x :

trip 1 : x

trip 1 Speed x Time 20 Distance 5

Write an equation for trip 1Distance = Speed

\cdot

Time

5 = x \cdot 20

Resolver para

x, 5 = x \cdot 20 : x = \frac{1}{4}

speed : \frac{1}{4}

Represent the time in terms of

y :

trip 2 : y

trip 2 Speed \frac{1}{4} Time y Distance 3

Write an equation for trip 2Distance = Speed

\cdot

Time

3 = \frac{1}{4} y

Resolver para

y, 3 = \frac{1}{4} \cdot y : y = 12

trip 2 time : 12

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