Question

Luis does not know how old your grandfather Fernando is, but he does know the age of his father john is 20 years younger than him. Luis was 15 years old and was born when his father was 35 years old. Luis uncle is 3 years younger than his dad. Analyze the two equations bellow that represents the ages of the person describe. X+20=y Y-20-3=z what do each variable represents

Answer 1

Answer: X= John's age , Y= Fernando's age, Z = Age of Luis uncle

Explanation:

Given: John is 20 years younger than fernando.

i.e. John' age + 20 = Fernando's age

So in the given equation "X+20=Y " , X= John's age and Y= Fernando's age.

From this , John's age: X= Y-20 (i)

Also, Luis uncle is 3 years younger than his dad( John).

Age of Luis uncle = John's age -3

=X-3

= Y-20-3 [From i]

So in the given equation Y-20-3=Z , Z = Age of Luis uncle