Answer:
john is 20 years old
Step-by-step explanation:
we can take the ages as
john= x
jean= x+12
according to question
x+(x+12)= 52
2x+12= 52
transpose
2x= 52-12
2x= 40
x= 40/2
x= 20
john= 20
jean= 20+12= 32
therefore john is 20 years old and jean is 32 years old
