GMAT Quantitative Reasoning Practice Test 4

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Question : 25 of 100

Marks: +1, -0

A, B, C

are three consecutive positive integers

(A>B>C)

.
What is the value of the expression

2 A+B+3 C

?

$6 A+7$
$5 A+1$
$5 A-1$
$6 A-5$
$6 A-7$

Solution:

A

different way is by expressing

B

and

C

according to

A

.

C=A-2, B=A-1

. So the expression becomes:

2 A+(A-1)+3(A-2)=6 A-7

.

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