Dear Teacher,<br/><br/> There are two sentences in which I don't know how to pronounce the signs:<br/><br/> pages 37-40<br/> The ratio between these two pieces is thus 1:17<br/><br/> How to read 37-40? 37 to 40 or 37 through 40? Why? <br/><br/> And how to read 1:17?<br/><br/> Thanks in advance.