rutu9809 rutu9809
  • 06-02-2024
  • Mathematics
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The ratio of the present ages of a husband and a wife is 5 : 4. Which of the following can be a possible ratio of their ages 20 years ago?
(a) 5 : 4
(b) 6 : 5
(c) 23 : 20
(d) 13 : 10

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