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I did not quite understand the solution. For question 1, how do we know that to find the total land we have to divide the production by the yield? Also, should it not be given what is 1 hectare?
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CapnSal
I did not quite understand the solution. For question 1, how do we know that to find the total land we have to divide the production by the yield? Also, should it not be given what is 1 hectare?

We divide production by yield because:

  • Production = Yield * Land
  • So, Land = Production / Yield

A hectare is the unit of area, which is clear from context. Nothing more about it is needed to solve the question.
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Bunuel

here, for the yield axis, there are 0, 0.5,..till 3 (total 7 divisions), but here are 8 horizontal division of axis (ie 8 horizontal lines) - is it a mistake? I thought it was a mistake - for e.g. for 2002, I calculated hectare as 2.9/1.25 (thinking that 1.5 in right axis was slightly misplaced upwards)
So in actual exam, will this misplacement intentinally put by question makers? If so, should I just take the reading as given by the graph or account for the potential misplacement of the numbers?
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GMAT-Club-Forum-3qn5brb0.png [ 49.08 KiB | Viewed 1928 times ]
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Bunuel

here, for the yield axis, there are 0, 0.5,..till 3 (total 7 divisions), but here are 8 horizontal division of axis (ie 8 horizontal lines) - is it a mistake? I thought it was a mistake - for e.g. for 2002, I calculated hectare as 2.9/1.25 (thinking that 1.5 in right axis was slightly misplaced upwards)
So in actual exam, will this misplacement intentinally put by question makers? If so, should I just take the reading as given by the graph or account for the potential misplacement of the numbers?
Attachment:
GMAT-Club-Forum-3qn5brb0.png
The horizontal lines are for the left y-axis, not the right. You should have noticed they align exactly with the left-axis labels (0 to 7), not with the right-axis (0 to 3).
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I did not quite understand the solution. For Statement 1, why isn't the land area 2,900,000/1.5 (2002) and 5,800,000/2.4 (2003), given that production is given in million metric tons, not metric tons?
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I did not quite understand the solution. For Statement 1, why isn't the land area 2,900,000/1.5 (2002) and 5,800,000/2.4 (2003), given that production is given in million metric tons, not metric tons?
You can ignore those extra zeros, they cancel out when comparing. No need to complicate the math, using 2.9 and 5.8 works exactly the same for finding the percentage change.
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I like the solution - it’s helpful.
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