PROBLEM. A bat and a ball cost $1.10 together. The bat costs $1 more than the ball. How much does the ball cost? SOLUTION. The puzzle...

Problem Three students Peter, James, and Emma celebrated a math exam. Peter bought 5 beer bottles for £3 each, suggesting they split...

PUZZLE. We have a glass of milk and a bucket of water. We take a spoonful of milk out of the glass and transfer it to the bucket. Then we...