(-2,-3)
I. (+,+)
II. (-,+)
III. (-,-)
IIII. (+,-)
Answer:
Father's age is 50, Son's age is 10
Step-by-step explanation:
X+Y=60
X-Y= 40
Let X represent the Father's age while Y represents the Son's age;
therefore, from the two equations, the value of X is
X= 60-Y
X= 40+Y then putting in the value of x
(40+Y) + Y= 60,
40+2Y=60
2Y=60-40 =20
Y= 10,
Now that we know the value of Y, we can get the value of x
If X+Y=60, then
X+10=60,
X=60-10,
X= 50
Answer:
35/3
Step-by-step explanation:

Simplify to get
9x+14=3(4x-7)
35=3x
x=35/3 or 11.66
The percentage would be 51% but if you want to round it the answer is 50%