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There are 250 seniors in a class. $$60\%$$ have plans to go to college. Of those with plans to go to college, $$40\%$$ plan to go to a college out-of-state. The number of students plan to attend in-state college is
Students planning to go to college $$= 60\%$$ of $$250 = 150$$. Out-of-state $$= 40\%$$ of $$150 = 60$$. So the number planning an in-state college is $$150 - 60 = 90$$.
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