@Carcass what I understand from this problem is that the tricky part is Lucille's age bracket is not mentioned except the limit that is less than 70. So Lucille could be between 1-69

The bracket of Gwen age is 30-40.

so we have to find max and min age.

if we take min age, say L=2 and G=30 so 30+2/2= 16

max age bracket, L=68 and G=40 so 68+40/2 = 108/2 = 54

Final age bracket we got is from 16 to 54

why we wont consider 18? Also why are you considering 22? if he more closer to age bracket 30-40 then both 18 and 22 should not be considered?

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