问答题

Translating Word Problems
These questions will test your ability to locate relevant mathematical information in word problems.
Place an X next to the correct expression in the questions below.

Kathy was twice as old as Jim 2 years ago. Today, Jim is j years old. In terms of j, how old was Kathy 2 years ago
______2(j-2)
______2j-2
______2(j+2)
______j(2+2)

【参考答案】

You are given that Jim is j years old today; therefore, 2 ye......

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