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How much pure acid should be mixed with 6 gallons of 20% acid solution in order to get a 40% acid solution?

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Peter, Marcia, and Cyndy collect stamps. Currently, Peter has twice as many stamps as Marcia and Cyndy has 17 more stamps than Marcia. Together, the three collectors have 117 stamps. How many stamps do each of them have individually?

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You can buy 9 cans for green beans at the village market for $4.12. You can buy 7 of the same green beans at Sam’s club for $4.22. Which place is the better buy?

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Pedro gets 8 hrs sleep each night. How many hours does Pedro sleep in a year with 365 days?

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Angela booked a band for tonight. She decided to use yield management pricing and set three ticket prices: $17.50, $15.00, and $12.50. Fans bought 3,000 seats in each section. What was the revenue for the event?

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During a clearance sale an electronic store sold a blu ray player for $225 if items on sale were discounted by 75% find the original retail price of the blu ray player

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A garden table and a bench cost $872 combined. The garden table costs $78 less than the bench. What is the cost of the bench?

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Translate each sentence into an equation. Then solve the equation The sum of 7,9,and a number is 40. find the number

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If f(x) = 8×2 − x3, find f'(2) and use it to find an equation of the tangent line to the curve y = 8×2 − x3 at the point (2, 24).

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Translate each sentence into an equation. Then solve the equation Eight decreased by a number equals to the quotient of 15 and 5. Find the number

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Write a loop that sets each array element to the sum of itself and the next element, except for the last element which stays the same. be careful not to index beyond the last element. ex: initial scores: 10, 20, 30, 40 scores after the loop: 30, 50, 70, 40 the first element is 30 […]