Download presentation

Presentation is loading. Please wait.

Published byRuby Bell Modified over 5 years ago

1
Unit 4 Review Flashcards Unit 4 Review Flashcards ALA: Pre-Algebra Unit 4 Ratios and Proportions

2
A hospital shift has 6 nurses and 2 doctors on duty. What is the ratio of nurses to doctors? Simplify if possible.

3
X + X 3:1 The ratio of nurses to doctors is 6:2, which simplifies to

4
A hospital shift has 6 nurses and 2 doctors on duty. What is the ratio of doctors to nurses? Simplify if possible.

5
X + X 1:3 The ratio of doctors to nurses is 2:6, which simplifies to

6
A hospital shift has 6 nurses and 2 doctors on duty. What is the ratio of nurses to total medical personnel? Simplify if possible.

7
X + X 3:4 The ratio of nurses to total medical personnel is 6:8, which simplifies to

8
A hospital shift has 6 nurses and 2 doctors on duty. What is the ratio of doctors to total medical personnel? Simplify if possible.

9
X + X 1:4 The ratio of doctors to total medical personnel is 2:8, which simplifies to

10
A hospital shift normally has 6 nurses and 2 doctors on duty. To prepare for an oncoming storm, the hospital will have 4 doctors on duty. How many nurses should be on duty to keep the usual ratio?

11
X + X If we double the number of doctors, we need to double the number of nurses, so 12 nurses will be on duty. We could also set up a proportion: 2 doctors = 4 doctors 6 nurses x nurses 2x = 24, so x = 12 nurses

12
A hospital shift normally has 6 nurses and 2 doctors on duty. To prepare for an oncoming storm, the hospital will have 3 doctors on duty. How many nurses should be on duty to keep the usual ratio?

13
X + X We could set up a proportion: 2 doctors = 3 doctors 6 nurses x nurses 2x = 18, so x = 9 nurses

14
A hospital shift normally has 6 nurses and 2 doctors on duty. To prepare for an oncoming storm, the hospital will have 15 nurses on duty. How many doctors should be on duty to keep the usual ratio?

15
X + X We could set up a proportion: 2 doctors = x doctors 6 nurses 15 nurses 6x = 30, so x = 5 doctors

16
Is this a true proportion? 12 = 20 15 40

17
X + X No,since 12 x 40 is not equal to 15 x 20.

18
Is this a true proportion? 5 = 20 15 60

19
X + X YES,since 5 x 60 Is equal to 15 x 20.

20
It takes 8 hours to drive 120 miles. How long will it take to drive 60 miles?

21
X + X If we drive half as many miles, it will take half as long, so it will take 4 hours. We could also set up a proportion: 120 miles = 60 miles 8 hours x hours 120x = 480, so x = 4 hours

22
2 out of 5 people prefer Coke to Pepsi. In a crowd of 300 people, how many would you expect to prefer Coke?

23
X + X We could set up a proportion: 2 Coke = x Coke 5 people 300 people 5x = 600, so x = 120 Coke-lovers

24
2 out of 5 people prefer Coke to Pepsi. In a crowd of 300 people, how many would you expect to prefer Pepsi?

25
X + X We could set up a proportion: 3 Pepsi = x Pepsi 5 people 300 people 5x = 900, so x = 180 Pepsi-lovers (We could also have subtracted 300 – 120 from the previous problem!)

26
You are done with the ALA Unit 4 Review

27
MoHealthWINs This workforce solution was funded by a grant awarded by the U.S. Department of Labor’s Employment and Training Administration. The solution was created by the grantee and does not necessarily reflect the official position of the U.S. Department of Labor. The Department of Labor makes no guarantees, warranties, or assurances of any kind, express or implied, with respect to such information, including any information on linked sites and including, but not limited to, accuracy of the information or its completeness, timeliness, usefulness, adequacy, continued availability, or ownership. Unless otherwise noted this MoHealthWINs material by St. Louis Community College is licensed under a Creative Commons Attribution 4.0 International License.St. Louis Community CollegeCreative Commons Attribution 4.0 International License Resources: Picture on slide 22 and 25 A Lesson in ContrastA Lesson in Contrast by Jeff Marchant is licensed under CC BY-NC-ND 2.0Jeff MarchantCC BY-NC-ND 2.0

Similar presentations

© 2021 SlidePlayer.com Inc.

All rights reserved.

To make this website work, we log user data and share it with processors. To use this website, you must agree to our Privacy Policy, including cookie policy.

Ads by Google