BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course

Redeem

Good Question!!!!

Expert replies
by rakeshd347 » Thu Oct 03, 2013 9:57 pm
Before being simplified, the instructions for computing income tax in Country Rwere to add 2 percent of one's annual income to the average(arithmetic mean)of 100units of Country R's currency and 1 percent of one's annual income. Which of the following represents the simplified formula for computing the income tax in Country R's currency, for a person in that country whose annual income is I?
(A) 50+I/200
(B) 50+3I/100
(C) 50+I/40
(D) 100+I/50
(E) 100+3I/100

OA C
Join the discussion
Source: — Problem Solving |

by theCodeToGMAT » Thu Oct 03, 2013 10:08 pm
Answer [spoiler]{C}[/spoiler]


Tax = 2(I)/100 + [ (100 + I/100)/2]
= 2I/100 + 50 + I/200
= I/40 + 50
R A H U L
Join the discussion

by [email protected] » Thu Oct 03, 2013 11:08 pm
Hi rakeshd347,

In certain Quant questions, you might find it easier to "convert" data from one format to another. While the answers are in "fraction format", you can very easily do the work with decimals, if you find that format easier.

Here we'd need to translate the given question into decimals:

J = one's income (I'm using "J" because an I looks like a 1)

2% of one's income = .02(J)

Avg of 100 units and 1% of one's income = (100 + .01(J)) / 2

Tax = .02(J) + 50 + .005(J)
Tax = .025(J) + 50
Tax = J(1/40) + 50

Final Answer: C

GMAT assassins aren't born, they're made,
Rich
Contact Rich at [email protected]
Image
Join the discussion

by GMATGuruNY » Fri Oct 04, 2013 12:37 am
rakeshd347 wrote:Before being simplified, the instructions for computing income tax in Country Rwere to add 2 percent of one's annual income to the average(arithmetic mean)of 100units of Country R's currency and 1 percent of one's annual income. Which of the following represents the simplified formula for computing the income tax in Country R's currency, for a person in that country whose annual income is I?
(A) 50+I/200
(B) 50+3I/100
(C) 50+I/40
(D) 100+I/50
(E) 100+3I/100

OA C
Let I = 200 units of currency.
The tax is the SUM of two values: 2% of the income AND the average of 100 units of currency and 1% of the income.
2% of the income = .02(200) = 4.
The average of 100 units of currency and 1% of the income = (100 + .01(200)) / 2 = 102/2 = 51.
Tax = 4+51 = 55. This is our target.

Now we plug I=200 into the answers to see which yield our target of 55.

Only answer choice C works:
50 + I/40 = 50 + 200/40 = 55.

The correct answer is C.
Private tutor exclusively for the GMAT and GRE, with over 20 years of experience.
Followed here and elsewhere by over 1900 test-takers.
I have worked with students based in the US, Australia, Taiwan, China, Tajikistan, Kuwait, Saudi Arabia -- a long list of countries.
My students have been admitted to HBS, CBS, Tuck, Yale, Stern, Fuqua -- a long list of top programs.

As a tutor, I don't simply teach you how I would approach problems.
I unlock the best way for YOU to solve problems.

For more information, please email me (Mitch Hunt) at [email protected].
Student Review #1
Student Review #2
Student Review #3
Join the discussion

by ganeshrkamath » Sun Oct 06, 2013 12:04 am
rakeshd347 wrote:Before being simplified, the instructions for computing income tax in Country Rwere to add 2 percent of one's annual income to the average(arithmetic mean)of 100units of Country R's currency and 1 percent of one's annual income. Which of the following represents the simplified formula for computing the income tax in Country R's currency, for a person in that country whose annual income is I?
(A) 50+I/200
(B) 50+3I/100
(C) 50+I/40
(D) 100+I/50
(E) 100+3I/100

OA C
Income tax = 0.02I + (100+0.01I)/2
= 0.025I + 50
= 50 + I/40

Choose C

Cheers
Every job is a self-portrait of the person who did it. Autograph your work with excellence.

Kelley School of Business (Class of 2016)
GMAT Score: 750 V40 Q51 AWA 5 IR 8
https://www.beatthegmat.com/first-attemp ... tml#688494
Join the discussion