15 is of x

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题目

15 is of x

Quantity A

x

Quantity B

10

A.

Quantity A is greater.

B.

Quantity B is greater.

C.

The two quantities are equal.

D.

The relationship cannot be determined from the information given.

\[ 15 = \frac{5}{3}x \] 两边同乘 3，得到： \[ 45 = 5x \] 两边同除以 5，解得： \[ x = 9 \] **答案是 B**

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