(Section - B)
PISA based Short Answer type questions: (Each of 3 marks)
36. Once upon a time two friends A and B were discussing about their families condition. B said that I can
solve any kind of riddle. Friend A said that one year ago, his father Mr. C was 7 times as old as his son "D".
Now his father Mr. C age is equal to the square of his son's D age. Then Friend B needs to find their present
ages of Mr. Cand D.
(i)
What are the algebraic equations of this situation if present age of C is "y" and D is “x”.
(a) Y- 1 = 7 (x - 1) and y = x'.
(b) Y
= 7x and y = x.
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