Series Ee Bonds Worth How Much Are Paper 30 Year Series EE Savings Bonds Worth At Maturity That Have A Face Value Of $40,000?

How much are paper 30 year Series EE savings bonds worth at maturity that have a face value of $40,000? - series ee bonds worth

The original issue price was 20.000. I thought that $ cause 40,000 to pay when due so easy. But my mother called someone at the bank and they told me they were just over $ 60K today. Which ends in 2017. I wonder if the wrong person at the bank. Ideas? Thank you.