A distinguished gentleman promised his squire to pay him a cape and ten gold coins for the next year of work. The gentleman, after seven months, had to go to another place for what he paid to his squire the proportional part corresponding to the period elapsed. To do this, he handed two gold coins and a cape to his squire.
How much was the layer valued?
If you think about the time you have not gotten to work or collect we deduce that for the remaining five months the squire was going to collect the 8 gold coins that are missing until the 10 coins are completed. With a simple rule of three we calculate that for the whole year you should charge 19.2 gold coins. As the gentleman thought to give him 10 coins plus the cape, we can conclude that valued the layer in 9.2 gold coins.