A survey of all beings on planet Dubble found that 70% preferred quect juice to all other juices. If 21 beings preferred quect juice, how
many beings were surveyed altogether?

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Tommy buys a sweater that is on sale for 40% off the original price. the expression p -0.4p can be used to find the sale price of the sweater, where p is the original price of the sweater. if the original price of the sweater is 50, what is the sale price?

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