Henry goes to the store to buy some clothes. A shirt costs $43.50, trousers cost $36.80, socks cost $5, and a hat costs $4.30. Before his purchases, he had $100 in his wallet. How much is he left with?
Aside from his Billionaire status, Paul Allen is also renowned for his reportedly high IQ of 160-170! Friends with Bill Gates, he helped to found Microsoft and is a well-known philanthropist, having donated $1.5k over time to science, education, technology, and the arts!