Chapter 6.2, Problem 48IP

To determine

Find the number of teens who use internet and the age in between $12and17$ .

Answer to Problem 48IP

The number of teens who use internet is $5360$ .

Explanation of Solution

Given:

It is given in the question that there are $6700$ teens in which $81\%$ teens are using the internet.

Concept Used:

In this, use the concept of doing estimation by rounding off the number to simpler numerals.

Calculation:

Here, It has to round off the number, $81\%$ to $80\%$ .

If, calculating $10\%of6700$ is $670$ (move decimal point to the left), then

  $80\%$ is $8$ times of $10\%$ : $8\times 670=5360$

Conclusion:

The number of children is $5360$