sgreenfield90 sgreenfield90
  • 23-11-2017
  • Mathematics
contestada

ray is 23 years older than his sister Carol. in 20 years he will be twice as old as Carol. how old is each of them now?

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Аноним Аноним
  • 23-11-2017
 r = c+23 

r+20 = 2(c+20) 
(c+23)+20 = 2(c+20) 
c+43 = 2c+40 
c = 3 : r = c+23 = 26

Carol is 3 years of age, and Ray is 26 years of age.


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Jumin
Jumin Jumin
  • 23-11-2017
Ray is going to be 86 and Carol is 43.
23+20=43 x 2=86 
86/2=43
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