Hi, The answer is <span>1219/3000000 Km/Hr</span> How I got my answer: Convert yard to foot 3 foot=1 yard 2/3*3=2 foot Now convert foot to km 1 foot=0.0003047 km 2 foot= 0.0003047*2 2 foot= 0.0006095 km speed(<span>yards can the snail crawl in 1 hour)=distance/time </span>speed=<span>0.0006095/1.5 Km/Hr speed=0.006095/15 Km/Hr </span>speed=0.001219/3 Km/Hr speed=1219/3000000 Km/Hr Hope this helps you.
You can solve a system of three equations by multiplying each equation by a number that allows you to add or suvtract the same equation together by eliminating the x or y variable