Henry Ernest Dudeney/Puzzles and Curious Problems/45 - Brother and Sister

by : $45$

 * Brother and Sister
 * A boy on being asked the age of himself and his sister replied:
 * "Three years ago I was seven times as old as my sister;
 * two years ago I was four times as old;
 * last year I was three times as old;
 * and this year I am two and one-half times as old."


 * What are their ages?