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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

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?

In the question below, it is asked for the minimum number of students who have failed in one or more subjects(Please correct me if I am wrong). This gives us (Max possible number of students to fail in only one subject)+(Minimum possible number of students failed in two or more subjects)=45.

In the solution the above equation is given by a+6f=45.

How can 'a' be 29(for 'f'=13) if the maximum number of students failed in a subject = 22(Maths)?

AB AND AC ARE TWO CHORDS OF A CIRCLE(NONE OF THE TWO IS A DIAMETER) WHICH ARE PERPENDICULAR TO EACH OTHER. IF THE LENGTH OF EACH OF THESE CHORDS IS 4 CM, FIND THE AREA OF THE CIRCLE.

THE ABOVE IS A CAT QUESTION IT IS THERE IN THE SET OF 5 QUESTION. IN CAT QUOTIENT/ GEOMETRY TEST 3

THERE IN THE SOLUTION IT IS ONE OF THE CHORD IS TAKEN AS DIAMETER. how???????????

SECONDLY AC IS ALREADY GIVEN AS 5 CM BUT AGAIN ITS VALUE HAS BEEN TAKEN OUT USING THE PYTHAGORAS THEOREM. hoW???????????????????

PLEASE EXPLAIN..

Please provide some tips on how to improve score in verbal with particularly RC's as i am not able to comprehend them properly even after months of practice.