|
Puppy
Thanks
Canine
Answer:
Delphine is ten years old
and Puppy is
four years old.
AI answer
Let's set up the equations using the given information:
Three years ago:
Delphine's age: D - 3
Puppy's age: P - 3
Equation: D - 3 = 7(P - 3)
Two years ago:
Delphine's age: D - 2
Puppy's age: P - 2
Equation: D - 2 = 4(P - 2)
Last year:
Delphine's age: D - 1
Puppy's age: P - 1
Equation: D - 1 = 3(P - 1)
This year:
Delphine's age: D
Puppy's age: P
Equation: D = 2.5P
Now we have a system of four equations with four unknowns.
We can solve for D and P using substitution or elimination methods.
Let's use elimination:
From the first equation, we can express D in terms of P:
D = 7P - 18
Substitute this expression for D in the second equation:
(7P - 18) - 2 = 4(P - 2)
7P - 20 = 4P - 8
3P = 12
P = 4
Now substitute P = 4 back into the first equation to find D:
D - 3 = 7(4 - 3)
D - 3 = 7
D = 10
Therefore, Delphine is 10 years old and her puppy is 4 years old.
|
|
|
|