Mindbender

A: "I just got something on our three ages," Charlie told his sister. "Interested?"

Ruth smiled. "Not really, but you're the oldest of us and I'm the youngest, so I suppose I should listen." "Well, we're spaced one year apart," Charlie declared. "And if you write your age before Mary's, you get my age, multiplied by Dad's."

How old was their father?

B: "I got them today, all the same of course," said Beryl. "Just three pounds the lot, but at Fentons, not where you told me."

Paul smiled. "Fine, but why there? Greigs is so much nearer."

"It is," his wife replied. "But Fentons had the same glasses at five pennies less, so I got three more for the money."

How many had she bought?