218k views
1 vote
Please help!!1) The floor tiles come in red,blue and black. There are 16 red, 5 blue and 4 black. What percent of the tilesare black?2) Frank walks to school 35% of the time. If there are 180 days in a school year, how many days did he walk to school?

User Jaumesv
by
7.9k points

1 Answer

4 votes

1) we have


16+5+4=25

25 tiles in total and 4 black tiles, then

25 ---> 100%

4 -----> x


\begin{gathered} 25* x=4*100 \\ 25x=400 \\ (25x)/(25)=(400)/(25) \\ x=16 \end{gathered}

answer: 16 % of the tiles are black

User Bboydflo
by
8.5k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories