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05 Oct 2023, 01:30
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E
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Difficulty:
25%
(medium)
Question Stats:
75% (01:23) correct
25%
(01:14)
wrong
based on 99
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The savings from a person’s income is the difference between his or her income and expenditure. What is the ratio of Mr. Kelvin’s savings in the year 1998 to the year 1999?
(1) The ratio of his income in the years 1998 to 1999 is 3 : 4.
(2) The ratio of his expenditure in the years 1998 to 1999 is 5 : 6.
(1) The ratio of his income in the years 1998 to 1999 is 3 : 4.
(2) The ratio of his expenditure in the years 1998 to 1999 is 5 : 6.
Pure algebraic questions like this one are no longer part of the GMAT Data Sufficiency syllabus.
For relevant Data Sufficiency questions, please check the Data Sufficiency forum:
Data Sufficiency Forum
Data Sufficiency Forum
15 Oct 2023, 12:46
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The stem asks for the ratio of savings from 1998 to 1999, so (I98 - E98)/(I99-E99)
(1) No information about comparative expenditures; not sufficient.
(2) No information about comparative incomes; not sufficient.
Even together, because we don't have a basis for comparing the expenditure in a given year to the income for that year, this could be all over the place. We still have
(I98 - E98)/((3/4)I98 -(5/6)E98)
Too many variables. Not sufficient
E
(1) No information about comparative expenditures; not sufficient.
(2) No information about comparative incomes; not sufficient.
Even together, because we don't have a basis for comparing the expenditure in a given year to the income for that year, this could be all over the place. We still have
(I98 - E98)/((3/4)I98 -(5/6)E98)
Too many variables. Not sufficient
E
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