Question 1200739
.


In formal English and in Math problems written in English, such combinations of words 


like "9 times older than" and other similar combinations are NOT USED and are PROHIBITED to use, 


because they are AMBIGUOUS and provoke misunderstanding.   
 


When a Math composer uses such a combinations of words, it is a 100% sign 

that this person does not know (is unfamiliar with) the rules of writing Math problems in English.



It is a 100% sign that this person did not open and did not read a standard Math textbook in English.