10% of the world’s population is left-handed. If there are 7,400,000,000 people on the planet, how many are left-handed and how many are right handed?

740,000,000 left handed people
6,660,000,000 right handed people
Steps:
10% is equal to 0.1
7,400,000,000 multiplied by 0.1
Equals 740,000,000 left handed
Total amount of people subtract left handed people equal right handed people
7,400,000,000 - 740,000,000 = 6,660,000,000 right handed people

I’d say letter a..

Multiply 9 and 67. then multiply 3 with 67. lastly the answer that you got for 9x67 is to be subtracted by the answer you got for 3x67