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# Peder currently works 40 hours a week. If his hourly wage we

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Senior Manager
Joined: 10 Apr 2012
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Peder currently works 40 hours a week. If his hourly wage we [#permalink]

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27 Aug 2013, 02:27
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15% (low)

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81% (02:06) correct 19% (01:20) wrong based on 63 sessions

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Peder currently works 40 hours a week. If his hourly wage went up by $3, how many fewer hours could he work and still earn the same weekly income as he did before the increase? (1) His weekly income is currently$600.
(2) The increase of $3 is a 20 percent increase over his currently hourly wage. [Reveal] Spoiler: OA Last edited by guerrero25 on 27 Aug 2013, 02:51, edited 1 time in total. Manager Joined: 13 Dec 2012 Posts: 194 Followers: 8 Kudos [?]: 108 [1] , given: 29 Re: Peder currently works 40 hours a week. [#permalink] ### Show Tags 27 Aug 2013, 02:42 1 This post received KUDOS guerrero25 wrote: Peder currently works 40 hours a week. If his hourly wage went up by$3, how many fewer hours could he work and still earn the same weekly income as he did before the increase?

A)His weekly income is currently $600. B)The increase of$3 is a 20 percent increase over his currently hourly wage.

A: If his weekly income is $600, that means you can calculate wage per hour. By working 40 hours in a week, it means his hourly wage is 600/40 =$15/hour. Now if the hourly wages rose by $3 to$18, it means that he would have to work for 600/18 = 33 hours 20 mins to earn the same wage as he earned in the previous week.

So A is sufficient.

B: If the increase of $3 is 20% rise over his currently hourly wage, you can calculate the current wage. What value will give you$3 as 20% rise? Yes (100/20) * 3 = $15. Since you can calculate the current total wages earned for the week, you can therefore calculate how many hours he will work if the wage rises by$3 in order to earn the same figure.

So B is also sufficient.

(In Bunuel's voice) Hope it is clear.
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Re: Peder currently works 40 hours a week. If his hourly wage we [#permalink]

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27 Aug 2013, 14:58
guerrero25 wrote:
Peder currently works 40 hours a week. If his hourly wage went up by $3, how many fewer hours could he work and still earn the same weekly income as he did before the increase? (1) His weekly income is currently$600.
(2) The increase of $3 is a 20 percent increase over his currently hourly wage. Name x = peter's wage/hour ==> total wage /week = 40x Name y = peter's new wage/hour ==> total wage /week = (x+3)y ==> (x +3)y = 40y (1) His weekly income is currently$600.
==> 40x = 600 ==> x =15 ==> can figure out y
==> (1) is suff

(2) The increase of \$3 is a 20 percent increase over his currently hourly wage.
==> 3 = 0.2x ==> x = 15 ==> can figure out y
==> (2) is suff

Note: to save time, do not need to calculate what is y.

Hope it helps.
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Re: Peder currently works 40 hours a week. If his hourly wage we   [#permalink] 27 Aug 2013, 14:58
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