Question

Approximately 2\%2%2, percent of the people in the world have red hair. There are about 7{,}000{,}000{,}0007,000,000,0007, comma, 000, comma, 000, comma, 000 people in the world. About how many people have red hair?

Answer 1

Find 2% of 7 billion.

7,000,000,000 x .02 = 140,000,000

About 140 million people have red hair.