Question 1206478
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To solve it mentally, take off for a moment 5 extra years of Pamela's age
and take off 5 extra ages from 65.


Then you will have two persons of equal ages with the sum of their ages of 65-5 = 60 years.


So, to get the Jiri's age, you simply should divide 60 by 2, which is not so difficult.


Do you agree ?


Is everything clear to you from my mental solution ?