mBrandon3399 mBrandon3399
  • 18-01-2015
  • Mathematics
Answered

Three times as many robinsas cardinals visited a bird feeder. If a total of 20 robin and cardinals visited the feeder, how many were robins



Answer :

diene
diene diene
  • 18-01-2015
x=# of cardinals
3 times as many robins as cardinals visited the feeder, so # of robins=3x
robins+cardinals=20, so x+3x=20
4x=20
x=5 cardinals
20-x=15 robins
Answer Link

Other Questions

Can someone help me please!!!!!1.Grace and Allie are going to meet at the fountain near their houses.They both leave their houses at the same time. Allie passes
How would I find the slope intercept form of x+y+3=0?
Solve: K= 2(11 - k) + 14
What kinds of activities made up the early economies of the North American colonies?
To make curtains for a living room window for a customer, you will need three pieces of fabric in the following lengths: 3 feet, 3 feet, and 5 feet. What is th
How many seconds in 2.6 days
The line with equation ax+by=20 passes through the points(-2,10) and (1,5)find a and b
if log28 = log4 +logx what is the value of x
Who established a school for navigation?
Can someone help me please!!!!!1.Grace and Allie are going to meet at the fountain near their houses.They both leave their houses at the same time. Allie passes