When you go out looking for petrol today what do you expect to pay? Will it be 169.9 cents per litre, or perhaps 164.9?
Whatever the price, it is certain to end in a nine.
But why, when we all know that for practical purposes 169.9 is 170?
Surely it can’t be because we’re all fooled into believing that we are paying a lower price?
The reassuring news just published in the journal
