damonjones24 damonjones24

16-11-2019
Mathematics

contestada

Charles is
15 years older than his sister Barbara. In
12 years, he will be twice as old as Barbara. How old is each of them now?

Respuesta :

staradivago31 staradivago31

16-11-2019

Answer:

Charles = 18

Barbara = 3

Step-by-step explanation:

Currently

Charles: x+15

Barbara: x

In twelve years

Charles: x+27

Barbara: x+12

Equation - Charles's age in twelve years will be double Barbara's age in twelve years. Using the information about, create the equation

x+27=2(x+12)

x+27=2x+24

x=3

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