Problema Solution
Mary is caring for 25 animals . the number of cows is 3 greater than the number of pigs. how many pigs is Mary caring for?
Answer provided by our tutors
We will assume that Mary has cow and pigs only.
Let
x = the number of cows
y = the number of pigs
The total number of animals is 25:
x + y = 25
x = y + 3
........
click here to see the system of equations solved for x and y
........
x = 14 cows
y = 11 pigs
Mary is caring for 11 pigs.