# 40%17.30%201220%210%УSt[5, 7)[7, 9)[3, 5)[9, 11)18.Sleep Hourson Academic Performance and JobPerformance," College Student Journal, Spring 2014A total of 45% of college students sleep between 5 and 7 hoursor between 9 and 11 hours. The difference in the percentageSource: Chiang et al., "The Effects of Sleepwho sleep between 5 and 7 hours and between 9 and 11 hoursis 41%. Find the percentage of college students who sleepbetween 5 and 7 hours and the percentage of college studentswho sleep between 9 and 11 hours.111 One week a computer store sold a total of 36 computersand external hard drives. The revenue from these saleswas \$27,710. If computers sold for \$1180 per unit and harddrives for \$125 per unit, how many of each did the storeTE T12. There were 180 people at a civic club fundraiser. Memberspaid \$4.50 per ticket and nonmembers paid \$8.25 per ticket.If total receipts amounted to \$1222.50, how many membersand how many nonmembers attended the fundraiser?sell?13. You invested \$7000 in two accounts paying 6% and 8%annual interest. If the total interest earned for the year was\$520, how much was invested at each rate?14 You invested \$11,000 in stocks and bonds, paying 5% and8% annual interest. If the total interest earned for the yearwas 730Percentage of Colleg

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Asked Sep 18, 2019
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