Question

Express 18 hours as a percentage of a week​

Answer 1

Answer:

10.714 %

Step-by-step explanation:

Ratio is a comparative quantity used to compare two things. Here, to find the percentage, we need to find the ratio of 18 hours to a week and then, multiply it by hundred.

So, first, to find the ratio, we need to convert the units of both the substances to a common unit. Here, we can either change 18 hours to weeks or 1 week to hours or both to days. However, I'll choose to change a week to hours as then, we'll not have to deal with decimals.

So, we know that 1 week has 7 days and 1 day has 24 hours.

This means that 1 week has 7*24 = 168 hours.

Now, ratio of 18 hours to a week or 18 hours to 168 hours = 18/168 = 3/28.

So, Percentage = 3*100/28 = 300/28 = 10.714% approximately.

Thus, 18 hours are 10.714% of one week.

Thanks!

Answer 2

1day=24hrs

1week =7 days

therefore 1 week =24×7

=168hrs

Percentage=18/168×100

=10.7%