Thank you for the explanations, they really are an eye opener. Can you maybe please post some worksheets on such specific problems ? Or suggest where we can solve them just to get better at it?
I have a misgiving regarding the second question : Qty A -> p-q Qty B -> p-r With your trick from one of your previous videos, p-q ? p-r (Cancel out p) -q ? -r (Since both the variables are positive, we can multiply a negative sign on both sides.) q ? r since r>q Quantity B is greater. Please correct me if I am wrong. :)
When multiplying by a negative you flip the sign (greater than or less than), so -q ? -r doesn't just become q ? r. To represent the flipping of the direction of the sign you would have to flip the sides, so it is now r ? q, giving the correct answer. Hope that helps!
Hello Philip, can you explain the 2nd riddle if we are to take decimals for q and r as we are told numbers not integers and i am now even more confused seeing the explanation of yours at sujay's comment as the sings are not clearer my device as a matter of fact. it would be great if you explain both of these doubts.
unfortunately, many of GRE questions are intentionally poorly written. However, both quantities cannot be equal because then the inequality will not be satisfied. The questions should say: x and y are positive integers SUCH THAT 3x < 4y.
Since they are mentioned as numbers ,shouldn't we consider fractions and decimals in question 2? If they are mentioned as integers, then it is fine. they have mentioned numbers.
I have the same doubt . I also have a doubt since they have mentioned "numbers". In that case , we should also be considering fractions and decimals right.
