GMAT Question of the Day (Sept 21): Geometry and Sentence Correction

By - Sep 21, 02:00 AM Comments [0]

Math (PS)

There are two concentric circles with radii 10 and 8. If the radius of the outer circle is increased by 10% and the radius of the inner circle decreased by 50%, by what percent does the area between the circles grow?

(A) 140%
(B) 141%
(C) 190%
(D) 192%
(E) 292%

Question Discussion & Explanation
Correct Answer - D - (click and drag your mouse to see the answer)

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Verbal (SC)

Because of wireless service costs plummeting in the last year, and as mobile phones are increasingly common, many people now using their mobile phones to make calls across a wide region at night and on weekends, when numerous wireless companies provide unlimited airtime for a relatively small monthly fee.

(A) Because of wireless service costs plummeting in the last year, and as mobile phones are increasingly common, many people
(B) As the cost of wireless service plummeted in the last year and as mobile phones became increasingly common, many people
(C) In the last year, with the cost of wireless service plummeting, and mobile phones have become increasingly common, there are many people
(D) With the cost of wireless service plummeting in the last year and mobile phones becoming increasingly common, many people are
(E) While the cost of wireless service has plummeted in the last year and mobile phones are increasingly common, many people are

Question Discussion & Explanation
Correct Answer - D - (click and drag your mouse to see the answer)

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