A community for students.
Here's the question you clicked on:
 0 viewing
anonymous
 5 years ago
Mary is going to paint a building that is 80 foot long, 23 feet wide, and 8 feet tall. Mary is trying to decide whether to use a five or seven inch brush. If the paint covers the surface in stroke and she can paint two foot strokes every minute, how many minutes would she save if she used the seven inch brush?
anonymous
 5 years ago
Mary is going to paint a building that is 80 foot long, 23 feet wide, and 8 feet tall. Mary is trying to decide whether to use a five or seven inch brush. If the paint covers the surface in stroke and she can paint two foot strokes every minute, how many minutes would she save if she used the seven inch brush?

This Question is Closed

sgadi
 5 years ago
Best ResponseYou've already chosen the best response.0area of all the walls \[A== 2wh+2lh=1648\] width of brush be a, we get area covered per minute as \[R=2*a\] total time taken is \[t=A/R=\frac{824}{a}\] for a=5, we get time t5 = 164.8 for a=7, we get time t7 = 117.7143 so time saved is t=t5t7=47.0847 minutes
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.