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

dumbcow · Answer

scale factor is 1/2 .... so her deck is half the size
---> 10 X 15

anonymous · Answer

so the answer would be 150?

anonymous · Answer

no wait i mean 75

dumbcow · Answer

no those are dimensions
10 ft by 15ft  is proportionally half of 20ft by 30ft

anonymous · Answer

so what do I have to do next to get the answer

dumbcow · Answer

i dont know the measurements are 10ft by 15ft
they are asking which are a possible measurement?

so i guess its 15

anonymous · Answer

thank you

dumbcow · Answer

yw

anonymous · Answer

so whats the answer????????????

dumbcow · Answer

@mathgenius14, lol the answer would be a deck with dimensions 10 by 15
15 is only measurement listed in answer choices...answer is 15

anonymous · Answer

ok thanks bro