



 
Hi Scott, The units tell you what to do. There are 1760 yards in a mile so \[30 \mbox{ yards} = 30 \mbox{ yards}\times \frac{1 \mbox{ mile}}{1760 \mbox{ yards}} = \frac{30}{1760} \mbox{ miles.}\] Also there are 60 seconds in a minute so \[2 \mbox{ seconds} = 2 \mbox{ seconds} \times \frac{1 \mbox{ minute }}{60 \mbox{ seconds }} = \frac{2}{60} \mbox{ minutes.}\] What is this in hours? What is 30 yards for every 2 seconds in miles for every hour? Penny  


Math Central is supported by the University of Regina and The Pacific Institute for the Mathematical Sciences. 