Beni"s uncle is building a deck for her house that is proportional to the twenty- feet by thirty- feet deck he built for his house. The scale factor between his deck and her deck is zero point five. Which of the following could be a measurement for Beni"s deck?

fifteen feet
twenty feet
thirty feet
fifty feet

Question

Beni"s uncle is building a deck for her house that is proportional to the twenty- feet by thirty- feet deck he built for his house. The scale factor between his deck and her deck is zero point five. Which of the following could be a measurement for Beni"s deck?
 	
	fifteen feet
	twenty feet
	thirty feet
	fifty feet

anonymous · Answer

do you know what proportional means?

anonymous · Answer

Yes but I am a little confused on scale factor.

anonymous · Answer

Like, I guess how he got it? I don't know. Math is not my  strong point.