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A theatre holds 400 seats. Two types of seats are available: orchestra and balcony. The cost of an orchestra seat is $60.00 and the cost of a balcony seat is $45.00. If all 400 seats are sold the theatre would collect $22 500.00. How many of each type of seat is available?
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The process of giving birth to a baby.
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The process of childbirth, especially the period from the start of contractions to delivery.
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Substances that prevent the growth of disease-causing microorganisms, often used on living tissues to prevent infection.
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