Approximately 2% of the people in the world have red hair. ​ ​ ​There are about 7,000,000,000people in the world. ​ ​About how many people have red hair?​

Answer 1

begin by writing 2% in its equivalent decimal form:

  2% = 2/100 = 0.02

 

Now multiply the total population by the decimal of 0.02 to get the answer:

  (7,000,000,000)(0.02) = 140,000,000

 

Thus there are 140,000,000 people with red hair.