If the ratio of children to adults is 2:9 and there are 70 children at an arts festival, how many adults are in attendance?

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adults

What is 5Y + (3Z + X)

John drives at an average speed of 40 miles per hour for the first 5 hours of the 655 mile trip to buffalo. Charlie then drives the remaining distance in 7 hours. What is Charlie's average driving speed?

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Severe depression is likely to be treated with

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