Ratios

1. The ratio of boys to girls is 6:7. If there are 65 students total, how many boys are there?

Question 1 of 13

2. A mixture is made up of 3 substances, A, B, and C.
The ratio of the weights of A and B is 1:2, and the ratio of the weights of B and C is 3:5. The total weight of the mixture is 95.
If the amount of substance A is doubles, what will be the weight of the new mixture?

110

190

100

125

Question 2 of 13

3. There are 2200 bass and 2000 catfish in a lake. If 21 fish are randomly caught, how many fish of each kind is most likely caught?

5 bass and 16 catfish

11 bass and 10 catfish

17 bass and 4 catfish

15 bass and 6 catfish

10 bass and 11 catfish

Question 3 of 13

4. A mixture is made up of 3 substances, A, B, and C.
The ratio of the weights of A:B is 2:3. The ratio of the weights of B:C is 4:1. The total weight of the mixture is 92 grams.
If all of substance A is removed, what is the weight of the new mixture?

84 grams

42 grams

32 grams

60 grams

4 grams

Question 4 of 13

5. The ratio of apples to bananas is 4:9. Which of the following can be the total number of apples and bananas?

Question 5 of 13

6. A car gets 20 miles per gallon. If gas costs $3.50 per gallon, how much would the required gas to travel 50 miles cost?

$3.50

$8.75

$10

$2.50

Question 6 of 13

7. The ratio of boys to girls is 3:5. Which of the following cannot be the total # of students?

Question 7 of 13

8. 4 smafs = 5 clucks
3 smafs = 2 drods

How many drods equal 1 cluck?

8 drods

$\frac{4}{5}$ drods

$\frac{8}{15}$ drods

16 drods

15 drods

Question 8 of 13

9. Jodie travels 24 miles each way to work, and her car travels 32 miles on each gallon of gas.
If the price of a gallon of gas increases by $0.04 per gallon, how much more will it cost Jodie to travel to and from work over a 5-day work week?

$0.30

$6.40

$9.60

$1.20

$4.80

Question 9 of 13

10. 1 grok = 9 smibs
4 smibs = 5 drabs

How many groks equal 1 drab?

$\frac{1}{5}$ groks

$\frac{1}{4}$ groks

20 groks

5 groks

4 groks

Question 10 of 13

11. The ratio of boys to girls is 7:9. If there are 63 girls, how many boys are there?

Question 11 of 13

12. The ratio of boys to girls is 9:4. If there are 36 boys, how many girls are there?

Question 12 of 13

13. There are 60 green marbles, 90 red marbles, and 150 blue marbles. If 40 marbles are randomly removed, how many of each color is most likely removed?

5 green, 15 red, 20 blue

8 green, 12 red, 20 blue

4 green, 14 red, 22 blue

9 green, 14 red, 17 blue

6 green, 12 red, 22 blue

Question 13 of 13