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Ages II (Posted on 2012-12-27) Difficulty: 2 of 5
Determine the ages of Mary, George, Alice, Claire and Stephen if:
  1. Mary and George total 33 years between them.
  2. Alice and Claire total 95 years between them.
  3. Stephen and Mary total 72 years between them.
  4. Mary and Claire total 87 years between them.
  5. Stephen and George total 73 years between them.

No Solution Yet Submitted by K Sengupta    
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Solution D1 approach Comment 2 of 2 |

I saw SH's solution- nice and effective . .

However, mine 1is D1 or less- let me share it with you.

he computation basically boils down to dealing with the same numbers, but I treated it as a D1 probloem (no algebra notation , no pen and paper), reasoning as follows:

If Marys age were 0 then G=33(eq1) and S=72(eq2),jointly 105-

now, eq5 specifies only 73, the missing part is twice M's age.

M=32/2=16 & the rest follows  ==>eq4==>eq2.




  Posted by Ady TZIDON on 2013-01-04 05:56:42
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