Question 1132480
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(1) The difference in their ages will always be 15 years.<br>
(2) In 15 years, twice her age will be thrice the age of her student.  In other words, her age will be 3/2 of her student's age.<br>
(3) 3/2 her student's age, with an age difference of 15 years, will be when she is 45 and her student is 30.<br>
(4) Since that will be 15 years from now, she is now 30 and her student is now 15.