GMAT Quantitative Reasoning Practice Test 4

Question : 31 of 100

Marks: +1, -0

A^2(B+C)=20,(A, B

and

C

are all integers bigger than 1

)

, what is the value of the expression

(B+C-A)

Solution:

Because they are all integers bigger than 1, the only multiplication can be

4 × 5=20

. Because

A

is an integer,

A^2

can't be 5 therefore its

4(A=2)

A =2

\;B+C=5

\;B+C-A=5-2=3

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