A community for students. Sign up today!
Here's the question you clicked on:
 0 viewing
 2 years ago
Say Frank can build a model airplane in 3 days, Jo can do it in 2, but Moe can only do it in 5 days. If they work together, they’ll build a model plane in:
Possible Answers
Selected Possible Answer
0.5 days
0.76 days
10 days
0.97 days
2 days
 2 years ago
Say Frank can build a model airplane in 3 days, Jo can do it in 2, but Moe can only do it in 5 days. If they work together, they’ll build a model plane in: Possible Answers Selected Possible Answer 0.5 days 0.76 days 10 days 0.97 days 2 days

This Question is Closed

ludwig457
 2 years ago
Best ResponseYou've already chosen the best response.0i think its 0.76 im not sure really i think its the rule of 3

Areesha.1D
 2 years ago
Best ResponseYou've already chosen the best response.0nope its not 0.76 thats what i guessed.

ludwig457
 2 years ago
Best ResponseYou've already chosen the best response.0would it be 2 days? since that is the fastest jo can do it

ludwig457
 2 years ago
Best ResponseYou've already chosen the best response.0thats the best i can think of sorry

sumanth4phy
 2 years ago
Best ResponseYou've already chosen the best response.0\[T_{F} = 3, T_{Jo} = 2, T_{Moe} = 5\]\[R_{F} = W/T_{F}, R_{Jo} = W/T_{Jo}, R_{M} = W/T_{M}\] W is work to be done to build a model airplane, R rate of work of wach person when three work together time taken \[W/(W/T_{F} +W/T_{Jo} +W/T_{M})\] 0.97 days

Areesha.1D
 2 years ago
Best ResponseYou've already chosen the best response.0@sumanth4phy what formula is that? Rate = work / time? could you explain what you did there?

Areesha.1D
 2 years ago
Best ResponseYou've already chosen the best response.0I see how you add their separate rates but why what are you dividing?

sumanth4phy
 2 years ago
Best ResponseYou've already chosen the best response.0yeah Rate/Speed at which work is done = W/T I need time so T=W/R hence the division
Ask your own question
Ask a QuestionFind 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.