RATIO AND PROPORTION 2 PROBLEMS To see the answer, pass your mouse over the colored area. 11. a) In this proportion -- 10 : 30 = 2 : 6. 1. a) -- which are the corresponding terms? 10 and 2; 30 and 6. 1. b) State the alternate proportion. "10 is to 2 as 30 is to 6?" 12. Read each proportion, then read the alternate proportion.
"2 is to 8 as 6 is to 24. Alternately, 2 is to 6 as 8 is to 24."
"12 is to 4 as 36 is to 12. Alternately, 12 is to 36 as 4 is to 12."
"2 is to 3 as 10 is to 15. Alternately, 2 is to 10 as 3 is to 15." 13. Common divisor. Complete each proportion.
14. Same multiple 4. a) If two numbers are multiplied or divided by the same number, 4. b) Write five pairs of numbers such that the first is three eighths The elementary pair are 3 and 8. Now take the same multiple of each one. For example: 6 and 16, 9 and 24, 12 and 32, 15 and 40. 15. Complete each proportion.
17. In a class, the ratio of boys to girls was 4 to 5. There were 20 boys. 18. In a survey, the ratio of Yes's to No's was 2 to 3. There were 300 19. The ratio of white roses to red was 3 to 4. There were 32 red roses. 10. The ratio of white roses to red was 3 to 4. Out of 28 roses, how
12. For, 3 out of every 7 roses -- 3 white + 4 red -- were white. 3 is to 7, then, as what number is to 28? Since 28 is 11. In a survey, the ratio of Yes's to No's was 2 to 3. Out of 100 40 Yes and 60 No. For, the Yes's were 2 out of 5, and the No's, 3 out of 5. And 2 is to 5 as 40 is to 100; that is, as 20 × 2 is to 20 × 5. 3 is to 5 as 20 × 3 is to 20 × 5. Continue on to the next section. or Return to the previous section. Copyright © 2018 Lawrence Spector Questions or comments? E-mail: themathpage@yandex.com Private tutoring available. |