Definitely sounds like a 110/74 BCD crankset. 24t will work with the 74 BCD, it's the smallest ring you can put on it. I think it will shift fine; it's usually a big jump between the middle and outer ring that can cause difficult front derailleur shifting on a triple, at least that's been my experience...........I run a 46/36/24 setup with my 110/74 BCD cranks on my old commuter/tourer/whatever-else bike, with an 11 x 32 cassette in the rear. A very nice range of gears IMHO-