1. A bat and a ball together cost $1.10 in total. The bat costs a dollar more than the ball. How much does the ball cost? 2. If it takes five minutes for five machines to make five widgets, how long would it take 100 machines to make 100 widgets? 3. In a lake there is a patch of lily pads. Every day the patch doubles in size. If it takes 48 days for the patch to cover the entire lake, how long will it take to cover half the lake?
