Dividing by 11 in your head
In Australia in 2000, the government introduced a 10% tax (called the goods and services tax or GST) payable on most things. Given a pre-tax price of something, it’s pretty […]
In Australia in 2000, the government introduced a 10% tax (called the goods and services tax or GST) payable on most things. Given a pre-tax price of something, it’s pretty […]