Question

Special Topics: Ratios, Rates & Proportions

1) There are 60 students and 13 teachers on a bus. What is the ratio of students to teachers?

2) There are 40 boys and 16 girls in a class of students. What is the ratio of girls to students?

3) A cat gave birth to 11 calico kittens and 16 non-calico kittens. What is the ratio of calico kittens to non-calico kittens?

4) Seven (7) adults and 10 children attended a play. What is the ratio of children to attendees?

5) A dog gave birth to 9 puppies, of which 2 are brindle. What is the ratio of brindle puppies to non-brindled puppies?

6) Out of 28 teenagers and adults, people, 12 adults attended a music concert. What is the ratio of teenagers to attendees?

7) Out of 22 cakes baked today, 11 cakes were baked in the morning. What is the ratio of cakes baked in the morning to the total cakes?

8) There are 110 students on a bus filled with 129 people. What is the ratio of students to teachers?

9) The ratio of oranges in a fruit salad to people it will serve is 9/40, or 9:40. If Lisa wants to serve 800 people, how many oranges will Lisa use?

10) A display case of friendship rings is marked 5 for $1.00. If Zach wants to buy 50 friendship rings, how much will Zach spend (not including tax)

Answer 1

1) 60:13

2) 40:16

since 8 is the greatest common divisor

we will divide both numbers by 8 and get the answer

5:2

3) 11:16

5) total puppies 9

brindle 2

non-brindle 7

ratio 2:7

4) 10:7

6) total 28 people attended the concert

12 are adult remaining 16 are teenagers

so we will have ratio

16:12

4 is GREATEST COMMON DIVISOR so we divide both numbers by 4 and get the answer

4:3

7) total cakes 22

baked in morning 11

ratio 11:22

GCD 11

FINAL ANSWER 1:2

8) STUDENT 110

TEACHER 129-110= 19

110:19

9) ORANGES : PEOPLE 9:40

800/40= 20

SO NO OF Orange 20*9=180

10) ratio of no of rings to price 5:1

for 50 friendship ring 50/5=10

so Zach spent 5*1=$5