I want to know the answer to the following question:
Which format held recordings ranging from 10 to 15 minutes?
All the background I'm provided with is that "The 7-inch 45 rpm format normally contains one item per side but a 7-inch EP could achieve recording times of 10 to 15 minutes at the expense of attenuating and compressing the sound to reduce the width required by the groove.". Is that enough to answer the question?