Dear all, Continuing with the discussion, I want to ask, how to be sure whether a given equation will have unique solution? For e.g. consider the following GMAT prep question At a certain bakery, each roll costs r cents and each doughnut costs d cents. if Alfredo bought rolls and doughnuts at the ba...

You are quite right. But is hit & trial method the only way to go about in these cases.

Aditya

Nice explanation Ben.

Nitin's approach was also quite good.

Aditya

Ron,

Thanks for this insight. Will try solving by plugging numbers and not mere algebra.

Really appreciate your effort and also your straight forward approach.

Thanks

Aditya

Yes it is a GMAT prep question. After correcting typos the question is as under: Exceeding even the figures predicted by the most optimistic financial analysts, the automobile company had earnings in the first quarter that more than doubled the previous quarter. a) company had earnings in the first ...

May pls help.

This is how I went with this: (A) The dogs will form an uncontrollable pack.: Hold this one (B) The dogs will require training to learn to herd the geese.: Not a big issue. Eliminate. (C) The dogs will frighten away foxes that prey on old and sick geese. : Out of context. Eliminate (D) It will be ne...

I have something toward this question and all the answer choices. Who was not accepting the convential wisdom that earth was flat, was it Columbus or the king and queen of spain? If they are the latter (which I feel more meaningful from the context of the sentence) then all choices are wrong. When ...

Recent studies suggest that an intake of vitamin E in excess of that found naturally in a balanced diet may actually increase the risk of developing certain illnesses , despite the claims of thousands of people who swear by it as a dietary supplement. (A) Recent studies suggest that an intake of vi...

The sentence is in Past Tense, we cannot use Continuous tense here. Hence D is wrong.

Aditya.

Ignore pls.

Two ways to do this problem. There are three groups: A: Having 3 persons, each a sibling of other 2 B: having 2 siblings C having 2 siblings. Suppose I choose 2 persons and both are siblings. How can I do that? Either I choose from group A, or B or C (Probabilities will be added) From A: Favorable w...

Method-2 Those familiar with conditional probability may go for this approach: There are three groups: A: Having 3 persons, each a sibling of other 2 B: having 2 siblings C having 2 siblings. To choose 2 persons such that they are not siblings. Choosing first person : Can be chosen without restrict...

I agree answer should be C. Say cost prioce of each sweater is C $. Then question tells us that Sales Price is C+30. Statement 1: Gives us the info that total revenue is 270$. (C+30) x No. of sweaters = 270. Can't be solved. So (1) Not sufficient. Statement 2 (C+30) - C = 0.5 C C is known Still we d...

You are right. see angle QST = x + a (if statement 2 is correct) Then angle RSQ = 180 -(x+a) Now angle RQS = angle RSQ (if statement 1 is correct) Thus angle PRT = 180 - [2 x {180-(x+a)}] This will give desired result. ............................................................ Pls do not insist on...