An employee is paid 1.5 times the regular hourly rate for : GMAT Data Sufficiency (DS)
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# An employee is paid 1.5 times the regular hourly rate for

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Manager
Joined: 09 Jun 2010
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An employee is paid 1.5 times the regular hourly rate for [#permalink]

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28 Jul 2010, 06:44
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Question Stats:

40% (01:31) correct 60% (00:53) wrong based on 6 sessions

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An employee is paid 1.5 times the regular hourly rate for each hour worked in excess of 40 hours per week, excluding Sunday, and 2 times the regular hourly rate for each hour worked on Sunday. How much was the employee paid last week?

1 The employee's regular hourly rate is \$10.

2 Last week the employee worked a total of 54 hours but did not work more than 8 hours on any day .

Pleas, I have been in so much cofused with D.S lately and my test day is approach help me with an easy way or any related way that can work on most of the questions

thanks guys
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28 Jul 2010, 07:13
to find the employee paid last week
- we need to know how much hours he has worked on each day,overttime,
- what are his hourly rates

stmt1
gives the rate but no idea how much he has worked

stmt2
employee has worked 54-40=14 hours more. since has not worked more than 8 hours per day, can either divide 54 in (8,8,8,8,8,8,6) or (6,8,8,8,8,8,8)
stmt is not suff because
- we do not know the wages per hour
- there are many combination possible for hours worked. if on sunday he works 8 or 6 hours, then the wage wil change

both stmt1 and stmt2
not enough
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28 Jul 2010, 13:07
I'm in the same boat re: DS. I really think practice is the only way to get these down perfectly.

In the case of this question, there are a lot of interesting variables, and GMAT wants to make sure you're paying attention.

You know that regular overtime = 1.5r * (t - 40), where r is regular hourly rate and t is total hours. You are also told the employee gets a special Sunday overtime = 2r * (S) where S equals hours worked on Sunday.

The final question is: how much was the employee paid last week? Meaning we need variables r, t, and s.

1) This provides r, but not t or S. INSUF
2) This provides t but not S. INSUF

Without a clear explanation of what portion of t was hours worked on Sunday, we can't solve for Sunday overtime. Therefore, 1 and 2 are INSUF together.

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28 Jul 2010, 13:29
We learn through Practice.

Keep working on DS, few of the questions are tricky; you just have to avoid capturing yourself in DS Trap.

Anyways; E for the above question...
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Re: D.S   [#permalink] 28 Jul 2010, 13:29
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