Yes. You can't say that extra time isn't fair just because there are a small percentage of people who may abuse it. Some people are genuinely disadvantaged and without this time would suffer. It's very easy to say no as someone who doesn't need it, but think about it in a caring way. People who have learning disabilities may find it very hard to process the questions and understand them or read large pieces of text, the extra time is given so they have more time to understand the task at hand and not put so much pressure on them - not so they have an advantage over everyone else, merely giving them the same opportunity. If you are given extra time, it's because you need it - it is only reasonable to let people have equal opportunities. Think about it this way, to read an English paper it would probably take me 2 mins, however for some it may take a lot more than the recommended time to read. It's not usually a lot of time either, merely an extra 5,10,15 minutes. This is hardly going to mean someone has a higher advantage, just that they need that time for extra reading, if they're a slow writer or to check over their work.