X=Tom´s age
y=Tim´s age.
we suggest this system of equations:
x+y=21
(x+3)=2(y+3)
We solve this system of equations by susbstitution method.
x=21-y
[(21-y)+3]=2(y+3)
24-y=2y+6
-y-2y=6-24
-3y=-18
y=-18/-3=6
x=21-y
x=21-6=15.
Answer: Tom is 15 years old, and Tim is 6 years old.
The answer is b yw
have a nice day
Let the sons age be x years then
- the fathers age is 2x + 5 years, So:-
2x + 5 - x = 25
x = 25 - 5 = 20
The father is 2 (20) + 5 = 45 years answer
46
When it says f(4) that means x=4
So you then just fill in all the x’s with 4’s and solve as normal
