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For each landscaping job that takes more than 4 hours, a [#permalink]
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08 Oct 2009, 17:15
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For each landscaping job that takes more than 4 hours, a certain contractor charges a total of r dollars for the first 4 hours plus 0.2*r dollars for each additional hour or fraction of an hour where r > 100, Did a particular landscaping job took more than 10 hours. (1) The contractor charges a total of $288 for the job. (2) The contractor charges a total of 2.48r dollars for the job.
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Re: For each landscaping job that takes more than 4 hours, a [#permalink]
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08 Oct 2009, 18:25



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Re: For each landscaping job that takes more than 4 hours, a [#permalink]
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07 Jun 2010, 02:52
Say total number of hours the job took = x
(1) \(r + 0.2r*(X4) = 288\)
The prompt is for a constraint on X. Without knowing the value of r, you cannot determine any possible value for x. Eg. If r = 288, X = 4 If r = 100, X is more than 13. > INSUFF
(2) \(r + 0.2r*(X4) = 2.4r\)
Cancel out r throughout:
\(1 + 0.2X  0.8 = 2.4\)
\(0.2X = 2.2\)
\(X = 11\) Answer to the prompt is YES
> SUFFICIENT
Pick B.



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Re: For each landscaping job that takes more than 4 hours, a [#permalink]
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01 Oct 2016, 16:15
Hello All,
On this question, can we manipulate the question stem to say:
Is the total amount paid = r + 0.2r * 6 > r +1.2r > 2.2r ( so the question is asking if the money paid was 2.2r) This was derived from breaking down the 10hrs into portions of 4 and 6hrs respectively
Stmt 1 just gives a figure and does not consider r  hence insufficient
So Stmt 2 gives us a direct correlation between 2.2r and 2.4r  and is sufficient



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Re: For each landscaping job that takes more than 4 hours, a [#permalink]
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08 Sep 2017, 18:52
Bunuel wrote: mrsmarthi wrote: For each landscaping job that takes more than 4 hours, a certain contractor charges a total of r dollars for the first 4 hours plus 0.2r dollars for each additional hour or fraction of an hour where r > 100, Did a particular landscaping job took more than 10 hours.
A) The contractor charges a total of $288 for the job. B) The contractor charges a total of 2.4r dollars for the job. Given: \(r>100\) Question: is \(t>10\)? (1) \(r+0.2r(t4)=288\) > \(t=\frac{1440r}{r}\) > if \(r=101\), then \(t>10\) but if \(r=200\), then \(t<10\). Not sufficient. (2) \(r+0.2r(t4)=2.4r\) > \(t=11\). Sufficient. Answer: B. Could you please explain how you got (t4)?



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For each landscaping job that takes more than 4 hours, a [#permalink]
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08 Sep 2017, 22:35
zanaik89 wrote: Bunuel wrote: mrsmarthi wrote: For each landscaping job that takes more than 4 hours, a certain contractor charges a total of r dollars for the first 4 hours plus 0.2r dollars for each additional hour or fraction of an hour where r > 100, Did a particular landscaping job took more than 10 hours.
A) The contractor charges a total of $288 for the job. B) The contractor charges a total of 2.4r dollars for the job. Given: \(r>100\) Question: is \(t>10\)? (1) \(r+0.2r(t4)=288\) > \(t=\frac{1440r}{r}\) > if \(r=101\), then \(t>10\) but if \(r=200\), then \(t<10\). Not sufficient. (2) \(r+0.2r(t4)=2.4r\) > \(t=11\). Sufficient. Answer: B. Could you please explain how you got (t4)? We are told that "For each landscaping job that takes more than 4 hours, a certain contractor charges a total of r dollars for the first 4 hours plus 0.2r dollars for each additional hour..." So, if the job takes 6 hours first 4 hours cost $r and each of the remaining (6  4) = 2 hours cost $0.2r.
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For each landscaping job that takes more than 4 hours, a [#permalink]
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03 Oct 2017, 05:15
hi experts, I am confused about statement #1, here is my approach, please point out my fault
Suppose H represents the total working time r + 0.2r(H 4 ) = 228 228 = 0.2r(6+H) 0.2r = 228/(6+H)
because r>100, so 0.2r>20, we can get 228/(6+H) > 20 because 6+H > 0 so 228> 20*(6+H) 57*4 > 4*5*(6+H) 57>6+H H< 5.4 that must not be greater than 10 so I think statement #1 is sufficient
Please help
thanks in advance have a nice day >_~ 57>5*(6+H)



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Re: For each landscaping job that takes more than 4 hours, a [#permalink]
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03 Oct 2017, 05:26




Re: For each landscaping job that takes more than 4 hours, a
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03 Oct 2017, 05:26






