CamronSmith1363 CamronSmith1363

14-05-2017
Mathematics

contestada

Steve is 5 times as old as Janis. In 12 years, he will be twice as old as she will be then. How old are they now?

Respuesta :

14-05-2017

Write this story as equations:

s = 5j
(s+12) = 2*(j+12)

Then solve:

5j+12 = 2j + 24 => 3j = 12 => j=4, s=5*4=20

Steve is 20, Janis is 4
In 12 years they will be 32 and 16

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