|
Question 880096: If it takes me 3 weeks to make 15 birdhouses. How long does it take to make 11 birdhouses?
Answer by josmiceli(19441)   (Show Source):
You can put this solution on YOUR website! It takes 3 wks to make 15 birdhouses
----------
In 1/3 of that time, you could only
make 1/3 as many, so
----------
In 1 wk you can make 5 birdhouses
----------
It will only take 1/5 of that time to make
1 birdhouse, so
----------
In 1/5 of a wk, you can make 1 birdhouse
----------
11 birdhouses will take 11 times as long, so
----------
it takes 11/5 = 2 1/5 weeks to build 11 birdhouses
|
|
|
| |
