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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 29 Jul 2018, 23:07
00:00
A
B
C
D
E

Difficulty:

  5% (low)

Question Stats:

83% (00:53) correct 17% (01:21) wrong based on 348 sessions

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

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New post 29 Jul 2018, 23:12
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 29 Jul 2018, 23:12
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, 03:05
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, 17:50
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, 03:36
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) = &nbs [#permalink] 22 Oct 2018, 03:36
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