SOLUTION: A can finish a work in 18 days and B can do the same work in 15days.The number of days required by them to finish it working to gather.

Algebra ->  Rate-of-work-word-problems -> SOLUTION: A can finish a work in 18 days and B can do the same work in 15days.The number of days required by them to finish it working to gather.      Log On


   

Question 1053033: A can finish a work in 18 days and B can do the same work in 15days.The number of days required by them to finish it working to gather.
Found 2 solutions by ewatrrr, ikleyn:
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
x days required by them to finish it working to gather
1%2F18+%2B+1%2F15+=+1%2Fx+
5x + 6x = 90
11x = 90
x = 90/11 days

Answer by ikleyn(52810) About Me  (Show Source):
You can put this solution on YOUR website!
.
For detailed solution of similar joint-work problems see the lessons
    - Using Fractions to solve word problems on joint work,
    - Solving more complicated word problems on joint work,
    - Selected joint-work word problems from the archive
in this site.

Read them and get be trained in solving joint-work problems.

Also, you have this free of charge online textbook in ALGEBRA-I in this site
    - ALGEBRA-I - YOUR ONLINE TEXTBOOK.

The referred lessons are the part of this textbook under the topic "Rate of work and joint work problems" of the section "Word problems".