智力題

• A bat and a ball cost $1.10 total. The bat costs $1.00 more than the ball. How much does the ball cost?
  
• If it takes five machines five minutes to make five widgets, how long would it take 100 machines to make 100 widgets?
  
• In a lake, there』s a patch of lily pads. Every day, the patchdoubles in size. If it takes 48 days for the patch to cover the entirelake, how long would it take for the patch to cover half of the lake?
  

[本話題由 溪水牡丹 於 2010-04-06 02:33:32 編輯]

1. 5cents and 1.05dollors?
2.one minute?
3.~don't know~~ or 24days?

These kind of questions make me feel so retarded~

47 days

5 minutes