831 views If 5 machines take 5 minutes to make 5 widgets, how long do 100 machines take to make 100 widgets? 1 year ago
539 views A bat and a ball cost $1.10. The bat costs $1 more than the ball. How much is the ball? 1 year ago
819 views You have a 3-liter jug and a 5-liter jug. How can you measure exactly 4 liters of water? 1 year ago