Mindbender

A: Clem emptied the bag of kalotan kobels on to the table. "I know you like them," he said.

"Crazy about them! But so many," Helen replied. "They must have cost a fortune."

"Not too much," Clem told her, "I got one more than the price of each in pence, £3.80 the lot."

How many had he bought?

B: A flashy old girl in Rabat

Had lots of fine gems on her hat.

Just nine times the square

Of the rocks she had there

Was half of their cube. How was that?