The activity for one week of 168 people was tracked and displayed in a circle graph. What was the percentage of time spent

Question

on sleep? Round the percentage to the nearest whole number.

Answer 1

To find the percentage of time spent on sleep, we first need to determine the total time spent by all 168 people in one week.

Let's say the total time spent by all 168 people in one week is 100%.

If the circle graph shows that sleep takes up x% of the total time, then we have:

x% = (time spent on sleep by all 168 people / total time spent by all 168 people) * 100%

Since we are rounding to the nearest whole number, we need to round the percentage of time spent on sleep to the nearest whole number.

Let's say the circle graph shows that sleep takes up 30% of the total time. Then:

30% = (time spent on sleep by all 168 people / total time spent by all 168 people) * 100%

Now we can solve for the time spent on sleep by all 168 people:

time spent on sleep by all 168 people = (30% * total time spent by all 168 people) / 100%

Since the total time spent by all 168 people is 100%, we have:

time spent on sleep by all 168 people = 30%

Therefore, the percentage of time spent on sleep by all 168 people is 30%.