Posted by James on Wednesday, August 3, 2011 at 1:02pm.
There are a total of 107 chickens and rabbits on a farm. The total number of legs of rabbits is 56 more than the total number of legs of chickens. How many chickens are there on the farm?

Math  PsyDAG, Wednesday, August 3, 2011 at 2:12pm
C + R = 107 Therefore R = 107C
4R  2C = 56
Substitute 107C for R in second equation and solve for C. Insert that value into the first equation and solve for R. Check by inserting both values into the second equation.