TCS Company Numerical Ability Age Problem

6 persons standing in queue with different age group, after two years
their average age will be 43 and seventh person joined with them. Hence
the current average age has become 45. Find the age of seventh person?

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TCS Other Question

There are two water tanks A and B, A is much smaller than B. While
water fills at the rate of 1 liter every hour in A, it gets filled up
like , 10, 20, 40, 80, 160 in tank B. (At the end of first hour, B has 10
liters, second hour it has 20 liters and so on). If tank B is 1/32
filled of the 21 hours, what is total duration of hours required to fill
it completely? For the FIFA world cup, Paul the octopus has been predicting the
winner of each match with amazing success. It is rumored that in a match
between 2 teams A and B, Paul picks A with the same probability as A's
chances of winning. Let's assume such rumors to be true and that in a
match between Ghana and Bolivia, Ghana the stronger team has a
probability of 2/3 of winning the game. What is the probability that
Paul will correctly pick the winner of the Ghana-Bolivia game?