Asked by Anonymous

Ken and Chris had an equal number of books. If Ken gave 19 books away and Chris gave 11 books away, the ratio of the number of books Ken had to the number of books Chris had was 1:3. How many books did each boy have at first?

Answers

Answered by mathhelper
at start Ken had x books
at start Chris had x books

(x-19) / (x - 11) = 1/3
3x - 57 = x - 11

solve for x
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