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by rahul.s » Sun Feb 07, 2010 2:57 am
Guy's net income equals his gross income minus his deductions. By what percent did Guy's net income change on January 1, 1989, when both his gross income and his deductions increased?

(1) Guy's gross income increased by 4 percent on January 1, 1989.

(2) Guy's deductions increased by 15 percent on January 1, 1989.

OA: E
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Source: — Data Sufficiency |
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by ajith » Sun Feb 07, 2010 3:25 am
rahul.s wrote:Guy's net income equals his gross income minus his deductions. By what percent did Guy's net income change on January 1, 1989, when both his gross income and his deductions increased?

(1) Guy's gross income increased by 4 percent on January 1, 1989.

(2) Guy's deductions increased by 15 percent on January 1, 1989.

OA: E
Question already discussed - Please do a search
https://www.beatthegmat.com/guy-s-net-income-t51867.html
Last edited by ajith on Sun Feb 07, 2010 3:37 am, edited 1 time in total.
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by thephoenix » Sun Feb 07, 2010 3:33 am
Ni=Gi-D

s1)Ni=1.04Gi-NOT KNWN(WE DNT KNOW D INC AND Gi) HENCE INSUFF

S2)Ni=NOT KNWN-1.15Di(WE DNT KNOW GI INC AND D) HENCE INSUFF

COMB
N=1.04Gi-1.15D
EQN CAN NOT BE SOLVED NO OTHER INFORMATION

hence E
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