To find the total work of two people at different speeds, we need to find a common speed limit to both.
In this case, Jordan can build a birdhouse in 2 hours so her speed is 1/2 birdhouse per hour.
For the sister, it takes 3 hours to build a birdhouse so her speed is 1/3 birdhouse per hour.
To find what they can do in one hour:

To find how long does it take to build a birdhouse:

Set the denominators equal:

Remove the denominators and solve:
Once again set the denominators equal:
Remove the denominators and solve for x:
6/5 hours is equal to 72 minutes.
Answer:
x=12
Step by step explanation:
Answer:
Step-by-step explanation:
common difference d=3-1=2
first term a=1
an=a+(n-1)d
2n-1=1+(l-1)2
2n-1=1+2l-2
2n-1=2l-1
l=n
(i used l for number of terms)
number of terms=n

Answer:
5 and 0 between 250 and 300