Question

1. one estimate shows that the number of people without access to safe drinking water is about one billion. how much water is required if each person who does not have access to safe drinking water is given 10 l of safe drinking water? give your answer in standard form and using powers of 10.

Explanation:

Step1: Identify the number of people

There are 1 billion = $1\times10^{9}$ people without access to safe - drinking water.

Step2: Determine water requirement per person

Each person needs 10 L of safe - drinking water.

Step3: Calculate total water requirement

The total amount of water required is the number of people times the water per person. So, $V=(1\times 10^{9})\times10$ L.
$V = 1\times10^{10}$ L. In standard form, this is $1\times 10^{10}$ L.

Answer:

$1\times 10^{10}$ L