victorique 23-10-2011 14:28
a math question (help~~~~)
[size=6]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[/size]
[cfed93e2 [4fd9f2d3
13少 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