GMAT CLUB OLYMPICS: In professional boxing matches, boxers compete aga

Question

In professional boxing matches, boxers compete against other boxers within the same weight class, and these competitions sometimes result in a boxer giving the opposing boxer a head injury. Records show that, of all weight classes, heavyweight boxers suffer from the highest rate of head injuries per match, a result attributed to the fact that they have the largest muscle mass of all weight classes. Records also show that lightweight boxers have the lowest muscle mass of all weight classes.

If the above statements are true, which of the following statements must also be true?

A. Of all weight classes, lightweight boxers have the lowest rate of head injuries per match.

B. Of all weight classes, heavyweight boxers cause the highest rate of head injuries to opponents per match.

C. It is more dangerous to belong to the heavyweight boxing class than to other classes.

D. On average, heavyweight boxers suffer from more head injuries per year than do boxers of other weight classes.

E. Larger muscle mass enables boxers to hit harder, causing head injury.

Bunuel · Accepted Answer

Explanation

We’ll go for ALTERNATIVE because we are asked to assess which answer choice must be true.

(A) We have no information on the class with the lowest rate, only on that with the highest, so (A) does not HAVE to be true. Note that while the passage does state that the high rate of head injuries per match in the heavyweight class is “attributed” to muscle mass, it does not tell us that this is a strictly linear correlation: we do not know whether less muscle mass always means fewer head injuries, so we cannot conclude anything about the class with the lowest rate.

(B) The passage tells us that boxers compete against  boxers in the same weight category . Therefore, the boxers who caused heavyweight boxers to have the highest rate of head injuries per match were other heavyweight boxers! This must be true and is the correct answer. For practice, let’s examine the others.

(C) We do not have information about all sources of danger and cannot say how head injuries compare with everything else.

(D) Without information on the number of matches played per year, we cannot calculate the number of head injuries per year.

(E) is a statement that is perhaps reasonable to  infer  from the given passage, but does not necessarily  derive  from it. In other words, it is not necessarily true—maybe larger muscle mass makes hits to the body less effective, so the boxers aim more for the head.

soudipsengupta · Answer

IMO B

A. Of all weight classes, lightweight boxers have the lowest rate of head injuries per match. -- This cannot be inferred from given statements

B. Of all weight classes, heavyweight boxers cause the highest rate of head injuries to opponents per match. --This is correct. It directly follows from the first two sentences of the argument

C. It is more dangerous to belong to the heavyweight boxing class than to other classes. --Nothing in the argument mentions which is more dangerous
 
D. On average, heavyweight boxers suffer from more head injuries per year than do boxers of other weight classes. --while it may be true, this statement is vague and does not take into account other sources of head injuries besides boxing matches

E. Larger muscle mass enables boxers to hit harder, causing head injury. -- while this maybe true nowhere it establishes that larger muscle mass enables them to hit harder than others in different weight categories

andreagonzalez2k · Answer

A. The question talks about head injuries in heavyweight boxers. We can not infer that there is a linear correlation between weight class and head injuries. Maybe in another weight class there is a lower rate of head injuries than in lightweight class.

C. The question talks about head injuries only. In other weight class may be another type on injuries more dangerous.

D. The rate of head injuries is per match. We don't know how many match a heavyweght boxer plays per year. If he plays less matches than in other classes the rate per year could be smaller.

E. It depends on where the boxer hits.

B. If a heavyweight boxer suffers from the highest rate of head injuries per match, then the opponent of this boxer, in each match, cause the highest rate of head injuries to opponents per match.

IMO B

rianaamy · Answer

In professional boxing matches, boxers compete against other boxers within the same weight class, and these competitions sometimes result in a boxer giving the opposing boxer a head injury. Records show that, of all weight classes, heavyweight boxers suffer from the highest rate of head injuries per match, a result attributed to the fact that they have the largest muscle mass of all weight classes. Records also show that lightweight boxers have the lowest muscle mass of all weight classes.

If the above statements are true, which of the following statements must also be true?

A. Of all weight classes, lightweight boxers have the lowest rate of head injuries per match. We dont know abt this group
 
 B. Of all weight classes, heavyweight boxers cause the highest rate of head injuries to opponents per match. CORRECT Directly given in the passage
 
 C. It is more dangerous to belong to the heavyweight boxing class than to other classes. We know nothing of other classes

D. On average, heavyweight boxers suffer from more head injuries per year than do boxers of other weight classes. Per year no. of matches can be lot fewer for heavyweight boxers

E. Larger muscle mass enables boxers to hit harder, causing head injury. Causes are not given in the passage

chaos91 · Answer

In professional boxing matches, boxers compete against other boxers within the same weight class, and these competitions sometimes result in a boxer giving the opposing boxer a head injury. Records show that, of all weight classes, heavyweight boxers suffer from the highest rate of head injuries per match, a result attributed to the fact that they have the largest muscle mass of all weight classes. Records also show that lightweight boxers have the lowest muscle mass of all weight classes.

If the above statements are true, which of the following statements must also be true?

A. Of all weight classes, lightweight boxers have the lowest rate of head injuries per match.  We cant say this, we dont know if there is a linear correlation between muscle mass and rate of head injury. and is also not a must be true.

B. Of all weight classes, heavyweight boxers cause the highest rate of head injuries to opponents per match. CORRECT Directly given in the passage

C. It is more dangerous to belong to the heavyweight boxing class than to other classes.  Danger is a very vague term, this cannot determined or concluded.
 
D. On average, heavyweight boxers suffer from more head injuries per year than do boxers of other weight classes.  we are talking about the rate, cannot tell anything about the actual count.

E. Larger muscle mass enables boxers to hit harder, causing head injury.  This is definitely one way to explain the mechanism, but its also possible that large muscle mass enables boxers to receive head injury more easily

tanimatt · Answer

In professional boxing matches, boxers compete against other boxers within the same weight class, and these competitions sometimes result in a boxer giving the opposing boxer a head injury. Records show that, of all weight classes, heavyweight boxers suffer from the highest rate of head injuries per match, a result attributed to the fact that they have the largest muscle mass of all weight classes. Records also show that lightweight boxers have the lowest muscle mass of all weight classes.

If the above statements are true, which of the following statements must also be true?

A. Of all weight classes, lightweight boxers have the lowest rate of head injuries per match.
 We don't know if the correlation holds true throughout every weight classes

B. Of all weight classes, heavyweight boxers cause the highest rate of head injuries to opponents per match.
 True. States right the stem. Since boxers are unlikely to injure themselves, its the opponents.

C. It is more dangerous to belong to the heavyweight boxing class than to other classes.
 Possible but we don't know if there are injuries other than head injuries

D. On average, heavyweight boxers suffer from more head injuries per year than do boxers of other weight classes.
 Numbers can not be derived from rate alone

E. Larger muscle mass enables boxers to hit harder, causing head injury.
 Could be true but too far fetched

B is the best answer

Lenel · Answer

This is 'Must be True' Question

A. Of all weight classes, lightweight boxers have the lowest rate of head injuries per match. - Can't be inferred, Too extreme, Eliminate

B. Of all weight classes, heavyweight boxers cause the highest rate of head injuries to opponents per match.  - If heavyweight boxers suffer from the highest rate of head injuries per match, then heavyweight boxers cause the highest rate of head injuries to opponents per match, because they compete within the same weight class. Must be True - Correct

C. It is more dangerous to belong to the heavyweight boxing class than to other classes. We know nothing of other classes

D. On average, heavyweight boxers suffer from more head injuries per year than do boxers of other weight classes. Per year no. of matches can be lot fewer for heavyweight boxers

E. Larger muscle mass enables boxers to hit harder, causing head injury. Causes are not given in the passage

D. On average, heavyweight boxers suffer from more head injuries per year than do boxers of other weight classes.  - Can't be inferred that heavyweight boxers suffer from more head injuries per year than do boxers of other weight classes, too extreme, Eliminate

E. Larger muscle mass enables boxers to hit harder, causing head injury.  - Can't be inferred, can be true or untrue, Eliminate

Answer : B

kevsaf95 · Answer

Hi Bunuel,
So the last part of the statement is UNNECESSARY?

"Records also show that lightweight boxers have the lowest muscle mass of all weight classes."

Can this happen on the official GMAT?

Thanks in advance,
Kevin

VerbalBot · Answer

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GMAT CLUB OLYMPICS: In professional boxing matches, boxers compete aga

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