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In 2002, 30% of the students at Maxwell state University were engineer

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In 2002, 30% of the students at Maxwell state University were engineer  [#permalink]

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New post 03 Jul 2018, 10:38
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In 2002, 30% of the students at Maxwell state University were engineering majors. The number of the engineering majors at the university increased by what percent between 2002 and 2003?

(1) In 2003, 45% of the students at the university were engineering majors.

(2) The number of engineering majors at the university increased by 750 between 2002 and 2003.

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In 2002, 30% of the students at Maxwell state University were engineer  [#permalink]

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New post 04 Jul 2018, 11:00
Given 30% in 2002 are Engineers.


(1) In 2003, 45% of the students at the university were engineering majors.

To calculate the percentage change we would need the total number of students in 2002 and 2003 . Hence INSUFFICIENT


(2) The number of engineering majors at the university increased by 750 between 2002 and 2003.
We need number students in 2002 or no of Engineer students in 2002 -- Hence INSUFFICIENT


Combined ,No Total no. of Students or no. of Eng in 2002 .--Hence INSUFFIENT , Option E
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Re: In 2002, 30% of the students at Maxwell state University were engineer  [#permalink]

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New post 04 Jul 2018, 12:52
15/100 equals 750/x


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Re: In 2002, 30% of the students at Maxwell state University were engineer  [#permalink]

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New post 04 Jul 2018, 13:38
Let's say the number of students in 2002 were X. So number of engineering majors in 2002 were 0.3X

Statement 1: It says 45% of students in 2003 were engineering majors. Nowhere does it state that the number of students were equal in both years. So if the number of students in 2003 were Y then we have number of engineering majors in 2003 as 0.45Y <-- Not Sufficient.

Statement 2: It says the number of engineering majors increased by 750 from 2002 to 2003. This means 0.45Y-0.3X=750. <-- Not sufficient.

Combined: We need to know the value of (0.45Y-0.3X)/0.3X = 750/0.3X. Since we don't know what X or Y is, both statements combined are not sufficient.
Re: In 2002, 30% of the students at Maxwell state University were engineer &nbs [#permalink] 04 Jul 2018, 13:38
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