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If, for the year 2005, technology book sales represented one-third of
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06 Dec 2022, 05:28
06 Dec 2022, 05:28
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88% (01:50) correct
11% (01:34) wrong based on 9 sessions
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If, for the year 2005, technology book sales represented one-third of new adult science/nature book sales, 50% of used adult science/nature book sales, and 1/10 of all children’s science/nature book sales, how many technology books were sold in 2005?
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109
Re: If, for the year 2005, technology book sales represented one-third of
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10 Dec 2022, 04:00
10 Dec 2022, 04:00
Expert Reply
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First, to find the number of technology books in each category, you need to multiply the percentages or fractions by the total numbers of books sold for each respective category of science/nature books. Then add all those together to find the correct answer. For new adult: 1/3 × 150 = 50. For used adult: 0.50 × 70 = 35. For new children’s: 1/10 × 120 = 12. For used children’s, 1/10 × 120 = 12. The final answer is 50 + 35 + 12 + 12 = 109.
First, to find the number of technology books in each category, you need to multiply the percentages or fractions by the total numbers of books sold for each respective category of science/nature books. Then add all those together to find the correct answer. For new adult: 1/3 × 150 = 50. For used adult: 0.50 × 70 = 35. For new children’s: 1/10 × 120 = 12. For used children’s, 1/10 × 120 = 12. The final answer is 50 + 35 + 12 + 12 = 109.
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