Question

using two variable only solve the following: father is four times as old as his son the age of father at the time of birth of sun was 30 find their present age. solve in two variable only​

Answer 1

Answer:

10 and 40 years old

Step-by-step explanation:

Let father's age be f and son's age be s

Then we have:

• f=4s
• f-s=30

Replacing f in the second equation:

• 4s-s=30
• 3s=30
• s=10, then f=4*10=40

Son is 10 and father is 40