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Which of the following is equal to 3/8 of 1.28?

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Which of the following is equal to 3/8 of 1.28?  [#permalink]

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New post 26 Nov 2018, 08:24
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A
B
C
D
E

Difficulty:

  5% (low)

Question Stats:

88% (01:06) correct 12% (01:58) wrong based on 127 sessions

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Which of the following is equal to 3/8 of 1.28?

(A) 24/5
(B) 12/25
(C) 13/50
(D) 6/25
(E) 4/25

Project PS Butler : Question #42


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Joined: 13 Nov 2018
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GMAT 1: 590 Q43 V28
Re: Which of the following is equal to 3/8 of 1.28?  [#permalink]

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New post 26 Nov 2018, 10:13
HKD1710 wrote:
Which of the following is equal to 3/8 of 1.28?

(A) 24/5
(B) 12/25
(C) 13/50
(D) 6/25
(E) 4/25

Project PS Butler : Question #42


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(3*128)/800 = 12/25 ....ans choice B
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Re: Which of the following is equal to 3/8 of 1.28?  [#permalink]

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New post 26 Nov 2018, 10:42
Top Contributor
HKD1710 wrote:
Which of the following is equal to 3/8 of 1.28?

(A) 24/5
(B) 12/25
(C) 13/50
(D) 6/25
(E) 4/25]


3/8 of 1.28 = 3/8 x 1.28
= 3/8 x 128/100
= 3/8 x 32/25
= 96/200
= 12/25

Answer: B

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Re: Which of the following is equal to 3/8 of 1.28?  [#permalink]

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New post 26 Nov 2018, 10:54
(3/8)*(128/100)= 12/25

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Re: Which of the following is equal to 3/8 of 1.28?  [#permalink]

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New post 26 Nov 2018, 21:51
1.28 * 3/8
= 128/100 * 3/8
= (2)^7/(5)^2(2)^2 * 3/(2)^3
= (2)^2/(5)^2 * 3
=12/25
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Re: Which of the following is equal to 3/8 of 1.28?   [#permalink] 26 Nov 2018, 21:51
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Which of the following is equal to 3/8 of 1.28?

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