Question

The average age of three boys is 15 year and tger ages are in 3:5:7 what is the age in years of the youngest boy

Answer 1

Answer :

Average age of the three boys = 15

=>3x + 5x + 7x = 15

=>15x = 15

=> x = 15/15

=> x = 1

The age of the youngest boy that is 3x

=》3x = 3 × 1

=》3 years.

Thanks