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Business, 12.03.2020 02:31 tristanf123
Example 1 The total cost of 5 textbooks and 4 pens is $ 32.00; the total cost of 6 other books of the same text and 3 pens is $ 33.00. Find the cost of each item. Solution: Let x = the cost of a book in dollars, y = the cost of a pen in dollars. Depending on the problem we obtain the two equations: 5x+4y =32 6x+3y=33 Example 2 I have $ 120.00 in 33 tickets at $ 5 and $ 2. How many tickets are $ 5 and how many $ 2? Solution: Let x = the number of tickets of $ 2 and y = the number of tickets $ 5. Under the terms: x + y = 33. Depending on the problem we obtain the two equations: x+y=33 2x+5y=133
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