I14-30

Question

https://gmatclub.com/gmat-focus-tests/resources/import/img/Rainfall(in%20mm)%20at%20six%20locations%20(1).png 
 
The graph above shows rainfall (in mm) for May, June, and July 2022 at six locations (A to F).

Based on the graph above, June accounts for the majority of the total rainfall over the three months at location  GRAPH_1_PLACEHOLDER , and the rainfall at that location in June represents  GRAPH_2_PLACEHOLDER  percent of the total rainfall across all six locations for that month.

Bunuel · Answer

Official Solution:

Drop-down 1: 
 
Majority means more than 50%. To identify the location where June accounts for the majority of the rainfall, look for the location with a blue column longer than the combined lengths of the other two columns. At location A, the blue column is 100 mm, while the other two columns (May and July) are 25 mm and 50 mm, respectively. Since 100 mm is greater than the combined total of 75 mm, location A meets the criterion.
 
 Drop-down 2: 
 
Next, calculate the percentage of location A's rainfall in June relative to the total rainfall across all six locations in June. Add the lengths of the blue columns for all six locations, which total 800 mm. Location A's rainfall in June is 100 mm, so 100/800 = 12.5%. Therefore, location A's rainfall in June represents 12.5% of the total rainfall across all six locations in June.

Correct answer:

Dropdown 1:  "A"

Dropdown 2:  "12.5"

kdofe · Answer

I like the solution - it’s helpful.

ShilpiAgnihotrii · Answer

good quality question!

Bunuel · Answer

I have revised the question, solution, and formatting by adding more details to enhance clarity

Sushi_545 · Answer

Hi  Bunuel ,

Majority of the total rainfall for june over three region doesnt it means say for A -

rainfall in june/(june+july +august)

Bunuel · Answer

You're actually using the  right formula , but you misread what the data is showing.

You wrote:

That is  exactly  what “June accounts for the majority of the total rainfall over the three months” means.

Now let’s apply it to  Location A :

May: 25 mm 
 June: 100 mm 
 July: 50 mm 
 Total: 25 + 100 + 50 = 175 mm 
 June share: 100/175 ≈  57.1% , which is indeed a majority

Now let’s try  Location B :

May: 75 mm 
 June: 150 mm 
 July: 75 mm 
 Total: 75 + 150 + 75 = 300 mm 
 June share: 150/300 =  50% , which is not a majority

So the  only  location where June accounts for  more than 50%  of that location’s 3-month total is  Location A .

That’s why the correct answer is  A , not B.

Karym · Answer

I like the solution - it’s helpful.

Luca46 · Answer

I like the solution - it’s helpful.

Prakruti_Patil · Answer

what is the fastest way of doing these calculations? because figuring each one will be too tedious, and simply making a judgement looking at the graph is not giving precise and correct answers to me ..

Advait01 · Answer

Just by looking at the graph we can eliminate C,D,E & F.
Now only A and B remain, i guess we can calculate both under 30 secs and get final answer

Try eliminating choices whenever possible

I14-30

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