Of the 6.25 billion people in the world, 310 million live in North America. What percent of the world's population lives in North America? Express your answer to the nearest whole number.

The percent of the world's population lives in North America is 5%.

Step-by-step explanation:

Given:

Of the 6.25 billion people in the world, 310 million live in North America.

Now, to find the percent of the world's population lives in North America.

Population of people in the world = 6.25 billion.

1 billion = 1000 million.

So, by using conversion factor we convert into million:

6.25 billion = 6250 million.

Population of people in North America = 310 million.

Now, to get the percent of the world's population lives in North America:

So, the percent to the nearest whole number is 5%.

Therefore, the percent of the world's population lives in North America is 5%.

step-by-step explanation:

the original amount doesn't ''re just looking for the time it takes for 1/2 of the substance to we have

(1/2) =)     take the ln   of both sides

ln (1/2)   = )   and we can write

ln(1/2) = ) lne     and lne   = 1     so we have

ln(1/2) = -.1092t     divide both sides by -.1092

t = ln(1/2)/-.1092 = about 6.347 days = about 6.3 days (rounded)