An alien has landed from another planet. After a few minutes the spaceship opens and a green little man walks out. I ask it what it wants it said he wanted to know about proportion. I told him that proportion is a relationship that says that two ratios or two rates are equivalent. I also told him that proportion can be written as a fraction and that there are two different ways to find proportion. One way is using proportion and the other way is using unit rate. Then I gave the alien a few days to get the what proportion means then i gave him a 3 problem questions.
21. David can saw a log into three pieces in7 min. If he continues sawing at a constantrate, how long will it take him to saw asimilar log into six pieces?