RATIO AND PROPORTION 2 PROBLEMS To see the answer, pass your mouse over the colored area. 11. a) Read this proportion:
"10 is to 30 as 2 is to 6?" 1. b) Which are the corresponding terms? 10 and 2; 30 and 6. 1. c) Read 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 by the same number, then the 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 10 .many were white and how many red? 12 white and 16 red. For, 3 out of every 7 roses -- 3 white + 4 red -- were white. That is, three sevenths of them were white, and four sevenths, red. One seventh of 28 is 4, so three sevenths are 12. The rest, 16, were red.
Or, we could ask, "3 is to 7 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. Continue on to the next section. or Return to the previous section. Please make a donation to keep TheMathPage online. Copyright © 2001-2007 Lawrence Spector Questions or comments? E-mail: themathpage@nyc.rr.com |