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27.07.2019 •
Mathematics
1. you decide to market your own custom computer software. you must invest $3318 on computer hardware, and spend $4.10 to buy and package each disk. if each program sells for $12.00, how many copies must you sell to break even? 207 copies 206 copies 420 copies 421 copies 2. mike and kim invest $10,000 in equipment to print yearbooks for schools. each yearbook costs $5.75 to print and sells for $25. how many yearbooks must they sell before their business breaks even? 500 yearbooks 520 yearbooks 400 yearbooks 1,740 yearbooks 3. a motorboat can go 16 miles downstream on a river in 20 minutes. it takes 30 minutes for this boat to go back upstream the same 16 miles. find the speed of the boat in still water. 40 mi/h 32 mi/h 8 mi/h 48 mi/h 4. an ice skating arena charges an admission fee for each child plus a rental fee for each pair of ice skates. john paid the admission fees for his six nephews and rented five pairs of ice skates. he was charged $32.00. juanita paid the admission fees for her seven grandchildren and rented five pairs of ice skates. she was charged $35.25. what is the admission fee? what is the rental fee for a pair of skates? admission fee: $3.50; skate rental fee: $3.00 admission fee: $3.25; skate rental fee: $2.50 admission fee: $3.00; skate rental fee: $2.00 admission fee: $4.00; skate rental fee: $3.50 5. mrs. huang operates a soybean farm outside grinnell, iowa. to keep her operating costs down, she buys many products in bulk and transfers them to smaller containers for use on the farm. often the bulk products are not the correct concentration and need to be custom mixed before mrs. huang can use them. one day she wants to apply herbicide to a large field. a solution of 67% herbicide is to be mixed with a solution of 46% herbicide to form 42 liters of a 55% solution. how much of the 67% solution must she use? 34 l 23 l 18 l 35 l
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Ответ:
Ответ:
71 + 24 = 95 answer