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Profit Per Student (in Dollars) at Dan’s Dojo, [#permalink]
 14 Jul 2018, 05:11
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Profit Per Student (in Dollars) at Dan’s Dojo, 2000–2004
| 2000 | 60 |
| 2001 | 80 |
| 2002 | 80 |
| 2003 | 100 |
| 2004 | 162 |
At Dan’s Dojo, the percent increase from 2004 to 2005 (not shown) was the same as the percent increase from 2000 to 2001. What was the profit per student for 2005?
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Re: Profit Per Student (in Dollars) at Dan’s Dojo, [#permalink]
14 Jul 2018, 05:30
ExplanationThe percent increase from 2000 to 2001 is: Percent Change =\(\frac{Difference}{Original}\times 100 \%\) Percent Change =\(\frac{20}{10}\times 100 \%=33.333333 \%\) Now, apply a 33.33333%, or \(\frac{1}{3}\), increase to 2004’s figure. The GRE calculator cannot accept a repeating decimal; instead, divide 162 by 3 to get the amount of increase, and then add 162 to get the new profit per student in 2005: 162 ÷ 3 + 162 = 216.
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Re: Profit Per Student (in Dollars) at Dan’s Dojo, [#permalink]
17 Sep 2019, 05:12
Previous percent increase is 33.3% so From 2004-2005; 162*33.3 = 5394.6 then divide it by 100 we get 53.946; adding this with 162 + 53.946 = 215.9460, this is the actual per-student profit whereas we take it as 216. Now, my question is in the main/real GRE xm do I need to put the 215.94 or just by leveling 215.94 to 216 and then put 216 as an answer. ???
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Re: Profit Per Student (in Dollars) at Dan’s Dojo, [#permalink]
17 Sep 2019, 05:16
The question will specify if the value must be rounded or you have to insert the exact value. Regards
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Re: Profit Per Student (in Dollars) at Dan’s Dojo, [#permalink]
17 Sep 2019, 05:26
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huda wrote: Previous percent increase is 33.3% so From 2004-2005; 162*33.3 = 5394.6 then divide it by 100 we get 53.946; adding this with 162 + 53.946 = 215.9460, this is the actual per-student profit whereas we take it as 216.
Now, my question is in the main/real GRE xm do I need to put the 215.94 or just by leveling 215.94 to 216 and then put 216 as an answer. ??? Be careful, an increase from 60 to 80 is a 1/3 increase. 1/3 = 33.3333333.....% In your solution, you rounded 33.3333333.....% down to 33.3% So, your final answer is a bit off. If we stick with the fraction increase of 1/3, we need only find 1/3 of 162, which is exactly 54 So, our final answer = 162 + 54 = 216 Cheers, Brent
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Re: Profit Per Student (in Dollars) at Dan’s Dojo, [#permalink]
17 Sep 2019, 05:29
GreenlightTestPrep wrote: huda wrote: Previous percent increase is 33.3% so From 2004-2005; 162*33.3 = 5394.6 then divide it by 100 we get 53.946; adding this with 162 + 53.946 = 215.9460, this is the actual per-student profit whereas we take it as 216.
Now, my question is in the main/real GRE xm do I need to put the 215.94 or just by leveling 215.94 to 216 and then put 216 as an answer. ??? Be careful, an increase from 60 to 80 is a 1/3 increase. 1/3 = 33.3333333.....% In your solution, you rounded 33.3333333.....% down to 33.3% So, your final answer is a bit off. If we stick with the fraction increase of 1/3, we need only find 1/3 of 162, which is exactly 54 So, our final answer = 162 + 54 = 216 Cheers, Brent Many Many thanks 
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Re: Profit Per Student (in Dollars) at Dan’s Dojo, [#permalink]
30 Oct 2019, 20:49
he percent increase from 2000 to 2001 is:
Percent Change =DifferenceOriginal×100%DifferenceOriginal×100%
Percent Change =2010×100%=33.333333%2010×100%=33.333333%
Now, apply a 33.33333%, or 1313, increase to 2004’s figure. The GRE calculator cannot accept a repeating decimal; instead, divide 162 by 3 to get the amount of increase, and then add 162 to get the new profit per student in 2005: 162 ÷ 3 + 162 = 216.
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Re: Profit Per Student (in Dollars) at Dan’s Dojo,
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30 Oct 2019, 20:49
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