Henry Ernest Dudeney/Puzzles and Curious Problems/300 - Fresh Fruits

by : $300$

 * Fresh Fruits
 * Some fresh fruit was being weighed for some domestic purpose.
 * ''It was found that the apples, pears and plums exactly balanced each other as follows:
 * One pear and three apples weigh the same as $10$ plums;
 * and one apple and six plums weigh the same as one pear.
 * How many plums alone would weigh the same as one pear?