Question 10
The teacher is now four times as old as John. In five years she will be three times as old as John. How many years older than John is the teacher? Give the age difference.
The English source says “4 times older”. Following its Vietnamese wording and answer key, interpret this as “four times as old”, not five times as old.
The English source says “4 times older”. Following its Vietnamese wording and answer key, interpret this as “four times as old”, not five times as old.