Question 751250
John is four years younger than clement.
 if their ages are in ratio of 7:9. 
 What is the age of john
:
let x = the multiplier
then
7x = J's age
and
9x = C's age
:
"John is four years younger than clement."
7x = 9x - 4
4 = 9x - 7x
4 = 2x
x = 4/2
x = 2 is the multiplier
then
7(2) = 14 yrs is J's age 
:
:
You can confirm this by finding C's age
9(2) = 18 is C's age, 4 yrs older than J