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# (0.3)^5/(0.3)^3

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Math Expert
Joined: 02 Sep 2009
Posts: 55277

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16 Sep 2018, 02:15
00:00

Difficulty:

5% (low)

Question Stats:

94% (00:27) correct 6% (01:13) wrong based on 86 sessions

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$$\frac{(0.3)^5}{(0.3)^3} =$$

A. 0.001

B. 0.01

C. 0.09

D. 0.9

E. 1

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VP
Joined: 31 Oct 2013
Posts: 1356
Concentration: Accounting, Finance
GPA: 3.68
WE: Analyst (Accounting)

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16 Sep 2018, 02:58
1
Bunuel wrote:
$$\frac{(0.3)^5}{(0.3)^3} =$$

A. 0.001

B. 0.01

C. 0.09

D. 0.9

E. 1

$$\frac{(0.3)^5}{(0.3)^3} =$$

= $$(0.3)^{5-3}$$

= $$0.3^2$$

=0.09

The best answer is C.
Director
Joined: 18 Jul 2018
Posts: 908
Location: India
Concentration: Finance, Marketing
WE: Engineering (Energy and Utilities)

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16 Sep 2018, 03:02
$$\frac{{0.3}^5}{{0.3}^3}$$

= $$0.3^{5-3}$$

= $$0.3^2$$

=0.09

C is the answer.
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Senior Manager
Joined: 13 Feb 2018
Posts: 271
GMAT 1: 640 Q48 V28

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16 Sep 2018, 03:19
If someone needs a visualization why we subtract powers and not divide 0.3 by 0.3

$$\frac{0.3^5}{0.3^3}$$=$$\frac{(0.3)(0.3)(0.3)(0.3)(0.3)}{(0.3)(0.3)(0.3)}$$=(0.3)(0.3)=0.09

IMO
Ans: C
Intern
Joined: 02 Sep 2015
Posts: 42

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16 Sep 2018, 14:39
Hi Bunuel,

is this a 600-700 range question?

Most of the times for me 700 questions are difficult to crack or take long time.
But 600 to 700 are very easy... wondering is this real
Re: (0.3)^5/(0.3)^3   [#permalink] 16 Sep 2018, 14:39
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# (0.3)^5/(0.3)^3

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