#1  a math question ... - victorique (高級會員) 發表於 23-10-2011 14:28

Q: Harry's walking speed is measured to be 2.5m/s. if the percentage error is 2%, suggest THREE possible actual values of his walking speed

#2  無標題 - 13少 (Super Moderator) 發表於 23-10-2011 15:27

THREE possible actual values of his walking speed:
1. 2.5 x 1-2% = 2.5 x .98 = 2.45m/s
2. 2.5m/s
3. 2.5 x 1+2% = 2.5 x 1.02 = 2.55m/s