At the store, there is a rule for determining the price of fruit. An apple costs 50¢, a pear costs 40¢, and an orange costs 60¢. It seems like the rule is 10¢ per letter, but a lemon does not cost 50¢. How much does a lemon cost?
(In reply to A semi-sensible solution
This scheme is logical and nice, however lemon's price is not within the 10c (round) resolution.