Answers

1. Answer:

   The son age is 10 years

   And, his mother age be 40 years

   Step-by-step explanation:

   Given that

   The mother is four times the age of her son

   And,  in 5 years, she will be three times as old as him

   We need to find out the ages of both

   Here we assume that the age of her son be x

   So the mother age be 4x

   Now in 5 years, her mother would be 3 times as old as his son

   So,

   4x + 5 = 3(x + 5)

   4x + 5 = 3x + 15

   x = 10

   The son age is 10 years

   And, his mother age be 40 years

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