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6(87.30 + 0.65) − 5(87.30) =

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Math Expert
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6(87.30 + 0.65) − 5(87.30) =  [#permalink]

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New post 30 Jul 2018, 00:07
00:00
A
B
C
D
E

Difficulty:

  5% (low)

Question Stats:

83% (01:15) correct 17% (01:28) wrong based on 629 sessions

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Re: 6(87.30 + 0.65) − 5(87.30) =  [#permalink]

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New post 30 Jul 2018, 00:12
6(87.30+0.65)−5(87.30)

=> 6(87.30) + 6(0.65) - 5(87.30)

=> 6(87.30) - 5(87.30) + 6(0.65)

=> 87.30 + 3.9

=> 91.20

Hence option D
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Re: 6(87.30 + 0.65) − 5(87.30) =  [#permalink]

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New post 30 Jul 2018, 00:12
Bunuel wrote:
\(6(87.30 + 0.65) − 5(87.30) =\)

A. 3.90
B. 39.00
C. 90.90
D. 91.20
E. 91.85


NEW question from GMAT® Quantitative Review 2019


(PS03887)


OA: D
\(6(87.30 + 0.65) − 5(87.30) =(6-5)87.30 +6*0.65=87.30+ 3.90= 91.20\)
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Re: 6(87.30 + 0.65) − 5(87.30) =  [#permalink]

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New post 30 Jul 2018, 04:05
1
1
Bunuel wrote:
\(6(87.30 + 0.65) − 5(87.30) =\)

A. 3.90
B. 39.00
C. 90.90
D. 91.20
E. 91.85


NEW question from GMAT® Quantitative Review 2019


(PS03887)



87.30 = x

= 6x + 6*0.65 -5x

= x + 3.90

= 87.30 + 3.90

= 91.20

The best answer is B.
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Re: 6(87.30 + 0.65) − 5(87.30) =  [#permalink]

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New post 10 Aug 2018, 18:50
2
Bunuel wrote:
\(6(87.30 + 0.65) − 5(87.30) =\)

A. 3.90
B. 39.00
C. 90.90
D. 91.20
E. 91.85


Because answer choices C, D, and E are so close to one another, we cannot use approximate values to solve this arithmetic problem. Expanding the first term and simplifying, we have:

6 x 87.30 + 6 x 0.65 - 5 x 87.30

6 x 87.30 - 5 x 87.30 + 6 x 0.65

87.30(6 - 5) + 3.9

87.3 + 3.9 = 91.2

Answer: D
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Re: 6(87.30 + 0.65) − 5(87.30) =  [#permalink]

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New post 22 Oct 2018, 04:36
After further solving the given expression we will get 6(87.30) + 6(0.65) - 5(87.30) or 87.3+
3.90= 91.20
hence Ans is D
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Re: 6(87.30 + 0.65) − 5(87.30) =  [#permalink]

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New post 24 Mar 2019, 14:36
**Distribute the 6 before adding the numbers in parentheses

\(6(87.30+0.65)−5(87.30) \Rightarrow 6(87.30) + 6(0.65) - 5(87.30)\)

\(87.30 + 6(0.65)\)

\(87.30 + 3.90\)

\(91.2\)

Answer D
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Re: 6(87.30 + 0.65) − 5(87.30) =  [#permalink]

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New post 18 Jul 2019, 06:30
6 x 87.30 + 6 x 0.65 - 5 x 87.30
6 x 87.30 - 5 x 87.30 + 6 x 0.65
87.30(6 - 5) + 3.9
87.3 + 3.9 = 91.2
Ans D
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Re: 6(87.30 + 0.65) − 5(87.30) =   [#permalink] 18 Jul 2019, 06:30
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