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If the sum of 5, 8, 12, and 15 is equal to the sum of 3, 4,

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by deloitte247 » Sun Jun 30, 2019 1:53 pm
$$5+8+12+15=3+4+x+x+3$$
$$40=10+2x$$
$$40-10=2x$$
$$\frac{30}{2}=\frac{2x}{2}$$
$$x=15$$

$$answer\ is\ Option\ B$$
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by Scott@TargetTestPrep » Mon Jul 01, 2019 4:47 pm
M7MBA wrote:If the sum of 5, 8, 12, and 15 is equal to the sum of 3, 4, x, and x + 3, what is the value of x?

A. 14
B. 15
C. 16
D. 17
E. 18

The OA is the option _B_

Source: Official Guide
We can create the equation:

5 + 8 + 12 + 15 = 3 + 4 + x + x + 3

40 = 10 + 2x

30 = 2x

15 = x

Answer: B

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