Problem . Fred brings home 100 kg of potatoes, which consist of 99% water. He leaves them outside overnight so that they consist of 98%...

Puzzle: Three students, Peter, James, and Emma, shared a pizza divided into equal slices. Emma ate a quarter of the pizza, and Peter ate...

Puzzle  Three students, Peter, James, and Emma, decided to celebrate the exams and share the cost . Peter bought five bottles at £3...

Puzzle: We have a glass of milk and a bucket of water ( Fig 1 ). We take a spoonful of milk from the glass and move it to the...