Imaginen que un maratonista corre toda una carrera a una velocidad constante. después de dos horas lleva recorridos 22 km •¿cuánto tarda en correr los 42 km de la competencia?

For this case we have:

If after 2 hours the marathon runner has traveled 22 kilometers we have:

2h -----------> 22km

Applying a rule of three, we can know the time it takes to run 42km. So, we have:

2h -----------> 22km

x -------------> 42km

Where "x" is the time it takes to travel 42km. Resolving we have:

Thus, after 3.82 hours the marathon runner will travel 42km.

3.82 hours

25 questions , because they start with 100.  

350-100=250 .  

. 250/10=25

step-by-step explanation:

first take off 100, then what x 10 = 250? that is your answer. (25)

1. 3. can also be expressed as (22/7)

2. -4.5

3. 3.6

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