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Karen's age this year is a multiple of 9. Five years ago her age was a multiple of 8. Determine Karen's age today. ​

 Mar 13, 2020
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K =   9x         and    9x-5 is a multiple of 8

 

   9x-5  multiple of 8

   9-5    no

   18-5

    27-5

   36-5    no but getting close

   45-5 = 40       yes!                    x = 5         9x = 45    9x-5 = 40  

 

 

She could also be 117      but unlikely !   cheeky

 Mar 13, 2020

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