MATH SOLVE

3 months ago

Q:
# Almost a billion people on the planet don't have access to clean drinking water." if there were 7.2Γ109 people in the world in 2014, then approximately what percent of them lived without clean drinking water? round to the nearest tenth of a percent.

Accepted Solution

A:

13.9%.

7.2 x 10^9 = 7,200,000,000.

Since 1 billion = 1,000,000,000 out of these 7,200,000,000 do not have access to clean water, we find the percent by taking:

1,000,000,000/7,200,000,000 = 10/72 = 13.9%

7.2 x 10^9 = 7,200,000,000.

Since 1 billion = 1,000,000,000 out of these 7,200,000,000 do not have access to clean water, we find the percent by taking:

1,000,000,000/7,200,000,000 = 10/72 = 13.9%