If the average(arithmetic mean)of two numbers is 16 and one of the numbers is x,

游客2024-01-12 54

问题 If the average(arithmetic mean)of two numbers is 16 and one of the numbers is x, what is the other number in terms of x?

选项 A、16-x
B、16-2x
C、16+x
D、32-x
E、32-2x

答案 D

解析 The correct answer is D. If the average of two numbers, x and some other number we’ll call y, is 16, then

= 16. Thus x+y=32 andy=32-x.

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