Question

The table above shows cell phone sales by color. What percent of the cell phones sold were blue?

Answer 1

Answer:

20percent

Step-by-step explanation:

First we will find the value of k.

Given

White + Black + Blue + Red = Total

8k+30+(30-2k)+k+5 = 100

8k+30+30-2k+k+5=100

7k+65=100

7k+65-65=100-65

7k=35

k = 35/7 = 5

Now given number of blue cell phone sold is 30-2k = 30 - 2(5) = 30 - 10 = 20,

Percentage of Blue cell phones = $\frac{Blue}{Total} *100\\=\frac{20}{100} *100\\=20%$percent