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Snowcat [4.5K]
3 years ago
15

Twelve years ago, Thea was 7years old. In 8 years, Thea will be three times younger than Nancy. Nancy is two years younger than

Cindy. How old is Nancy now?
Mathematics
1 answer:
kiruha [24]3 years ago
8 0

Part of this question contradicts itself, so I'm not sure what answer it's looking for.

12 + 7 = 19

19 + 8 = 27

27/3 = 9

So that makes perfect sense, but then it says "Nancy is two years younger than Cindy."

There is no possible way that can be true and Thea can be 3x older than her.

Something is wrong here.

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When you set two equations or functions equal to each other that is saying you want to know when the graphs intersect.  So the y and x intercept don't matter, unless you combined the terms like this.

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Of your options you just want the ones dealing with the intersection point.  And of those two we are plugging in x, so we want the x coordinate.

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