Mindbender

A: Bobby checked his change. "That's all I got back from my pound, Dad," he said. "Chocolates cost too much."

"Everything does," John chuckled. "You'll just have to eat less. But anyway, if it had cost you one and a half times as much, your change would have been only two thirds what it was."

How much had the boy been charged?

B: "Homework?" Fred asked.

"Sort of, Dad," he replied. "I've been figuring out a number that's the square of its first pair of digits added to twice the square of the other pair."

Fred jotted down some figures on a scrap of paper. "You mean like 2832, twice the square of 32 plus the square of 28?"

"Yes, but I found a different number."

What was it?