27 ducks are marching to the pond. 5 lose their way, 13 return, and 9 of them make it to the pond. What happens to the rest of them?
A boy is twice as old as his sister, and half as old as their father. In 50 years, his sister will be half as old as their father. How old is the boy now? A merchant can place 8 large boxes or 10 small boxes into a carton for shipping. In one shipment, he sent a total of 96 boxes. If there are more large boxes than small boxes, how many cartons did he ship? |