Robert, who was 6 years old, was looking at the red ripe tomatoes growing in Farmer White’s garden.  ‘I’ll give you my two pennies for that tomato,’ said Robert pointing to a beautiful, large, ripe fruit hanging on the vine.

‘No, I can’t do that,’ replied Farmer White, ‘I can get a dime for a tomato like that one.’

So Robert pointed to a smaller green tomato, ‘Will you take two pennies for that one?’
‘Oh, yes,’ answered the farmer, ‘I’ll give you that one for two cents.’

‘OK,’ said Robert smiling, sealing the deal by putting the coins in the Farmer White’s hand, ‘I’ll collect it in a week’s time.’