Danielle has a new beaded necklace. the necklace has 36 blue beads and 12 white beads. what percentage of the beads on danielle's necklace are blue?

write your answer using a percent sign (%).

The answer to your question is: 75%.

Step-by-step explanation:

Data

Necklace has 36 blue beads

                        12 white beads

Total number of beads = 48

Process

Use a rule of three

                                  48 beads 100 %

                                  36 beads   x

                                  x = (36 x 100) / 48

                                  x = 3600 / 48

                                 x = 75 % are blue beads

a 4/6 = 9/12   not proportional

step-by-step explanation:

to find which are not proportional, we can use cross products

if it is true, they are proportional.   if it is not true, they are not proportional.

a 4/6 = 9/12

4* 12 = 6*9

48 = 54

not this is not proportional  

b 2/3 = 12/18  

2* 18 = 3 * 12

36 = 36

this is proportional

c 5/4 = 10/8  

5*8 = 4*10

40 = 40

this is proportional

d 7/5 = 35/25

7*25 = 5 * 35

175 = 175

is proportional