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# Sue s monthly earnings consist of a monthly salary and a 4

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Senior Manager
Joined: 28 Aug 2010
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Sue s monthly earnings consist of a monthly salary and a 4 [#permalink]

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27 Dec 2010, 13:58
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Difficulty:

35% (medium)

Question Stats:

65% (02:11) correct 35% (00:50) wrong based on 78 sessions

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Sue’s monthly earnings consist of a monthly salary and a 4 percent commission on the portion of her monthly sales that is in excess of $2,000. If Sue’s monthly salary was the same in July as in August, how much greater were her sales in July than in August? (1) Sue’s monthly earnings were$3,620 in July and $3,580 in August. (2) Sue’s monthly salary was$3,500 in July and in August.
[Reveal] Spoiler: OA

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Ajit

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Re: Sue s monthly earnings consist of a monthly salary and a 4 [#permalink]

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27 Dec 2010, 14:52
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ajit257 wrote:
Sue’s monthly earnings consist of a monthly salary and a 4 percent commission on the
portion of her monthly sales that is in excess of $2,000. If Sue’s monthly salary was the same in July as in August, how much greater were her sales in July than in August? (1) Sue’s monthly earnings were$3,620 in July and $3,580 in August. (2) Sue’s monthly salary was$3,500 in July and in August.

can some explain a better way to deal with such problems.

Sue's earnings=fixed salary+4/100(sales-2,000) --> earnings=fixed salary+4/100*sales-80 --> sales=25(earnings-fixed salary+80).

Given: fixed salary(July)=fixed salary(August). Question: sales(July)-sales(August)=25(earnings(July)-fixed salary+80)-25(earnings(August)-fixed salary+80)=25(earnings(July)-earnings(August)) So, all we need is the values of earnings(July) and earnings(August)

(1) Sue’s monthly earnings were $3,620 in July and$3,580 in August. Sufficient.
(2) Sue’s monthly salary was \$3,500 in July and in August. Not sufficient.

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Re: Sue s monthly earnings consist of a monthly salary and a 4 [#permalink]

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02 Feb 2016, 09:30
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Re: Sue s monthly earnings consist of a monthly salary and a 4   [#permalink] 02 Feb 2016, 09:30
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