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The average age of the members of a club increases to 27 when 3 more persons whose average age is 29 join them from 26. What is the number of members in the club now?

I did not understand this question at all. I will be really greatful if I get an explanatory answer

A 735 g sample of a 16%( by weight) solution of iodine in alcohol is kept for three days. Some of the alcohol gets evaporated and the concentration of the solution becomes 20% by weight, what amount of alcohol gets evaporated

When x=6 and y=10, isn't that a solution?

in a group of four teams,what is the probability of one team losing all matches and one team winning all matches? probability of winning a match for any team is half(1/2)

How I should score max marks in quant

How I should max marks in quant

1 .... D 2....D 3......A 4......C 5....A.... ans this parsentege

5,5,7,12,36,108, ?

P, Q, R, and S are four brothers who went to an ice cream parlour. Each of them ate a different number of ice creams among 1, 2, 3, and 4. Since their mother do not allow more than one ice cream per day, they decided to report distorted information to her. So, each one of them decided to be a truth-teller, or a liar, or an alternator. Truth-tellers always tell the truth and liars always make false statements. Alternators, however, alternate between making true and false statements, in any order. Among the four, there is at least one truth teller, one liar, and one alternator. Each of the four brothers make the following statements –
P: 
(i) The difference between the number of ice creams eaten by me and that by R is two.
(ii) S is not a liar.
Q:
(i) Exactly two of us tell the truth.
(ii) R ate one ice cream while P ate 3 ice creams.
R:
(i) Only one of us is an alternator.
(ii) S ate four ice creams.
S:
(i) I am an alternator
(ii) Only one of us is a liar.

Question 51

Who ate the most number of ice creams?