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GRE Prep Club Legend  Joined: 07 Jun 2014
Posts: 4857
GRE 1: Q167 V156 WE: Business Development (Energy and Utilities)
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calculate the value of m [#permalink]
Expert's post 00:00

Question Stats: 94% (00:39) correct 5% (01:24) wrong based on 17 sessions
$$\frac{(10^3)(0.027)}{(900)(10^{-2})}=(3)(10^m)$$

 Quantity A Quantity B m 3

A)The quantity in Column A is greater.
B)The quantity in Column B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.
[Reveal] Spoiler: OA

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Sandy
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Re: calculate the value of m [#permalink]
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Expert's post
sandy wrote:
$$\frac{(10^3)(0.027)}{(900)(10^{-2})}=(3)(10^m)$$

 Quantity A Quantity B m 3

A)The quantity in Column A is greater.
B)The quantity in Column B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.

GIVEN: $$\frac{(10^3)(0.027)}{(900)(10^{-2})}=(3)(10^m)$$

Rewrite some values: $$\frac{(10^3)(27)(10^{-3})}{(9)(100)(10^{-2})}=(3)(10^m)$$

Rewrite more values: $$\frac{(10^3)(3^3)(10^{-3})}{(3^2)(10^2)(10^{-2})}=(3)(10^m)$$

Simplify: $$\frac{(10^0)(3^3)}{(3^2)(10^0)}=(3)(10^m)$$

Simplify: $$\frac{3^3}{3^2}=(3)(10^m)$$

Simplify: $$3=(3)(10^m)$$

This tells us that $$10^m = 1$$, which means m = 0

We get:
QUANTITY A: 0
QUANTITY B: 3

Answer: B

Cheers,
Bret
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Brent Hanneson – Creator of greenlighttestprep.com Sign up for my free GRE Question of the Day emails Re: calculate the value of m   [#permalink] 05 Dec 2018, 13:19
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