Almost a billion people on the planet don't have access to clean drinking water." if there were 7.2×109 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.

13.9%

Step-by-step explanation:

Given : Almost a billion people on the planet don't have access to clean drinking water."

We know that 1 billion =

There were people in the world in 2014.

Now, the percent of people lived without clean drinking water :-

Hence, approximately 13.9% of them lived without clean drinking water.

answer: 21$

step-by-step explanation:

$42 / $14 = 3   (ratio 3: 1)

$7 x 3 = $21