Miss Larson goes out to eat for dinner. Her bill $40.32. She wants to leave a 25% tip. How much money should Miss Larson leave as her tip? round to the nearest hundredth.
To calculate the tip, Miss Larson needs to multiply the bill by 25% (or 0.25).
Tipping amount = Bill cost * tip percentage
= $40.32 * 0.25
= $10.08
Therefore, Miss Larson should leave $10.08 as her tip.
Air had a college graduation party. She invited and predicted that 100 people would attend. 80 out of the 100 invited attended. Calculate the percent error in her prediction. Round to the nearest hundredth.
To calculate the percent error in Air's prediction, we need to find the absolute difference between the predicted and actual attendance, and then divide it by the predicted attendance. Finally, we multiply the result by 100 to get the percentage.
Actual attendance = 80
Predicted attendance = 100
Difference = Actual attendance - Predicted attendance
= 80 - 100
= -20
Percent error = (|Difference| / Predicted attendance) * 100
= (|-20| / 100) * 100
= (20 / 100) * 100
= 20%
Therefore, the percent error in Air's prediction is 20%.