Solution

35955

Problem / game
This Pied Piper of Hamelin Back to problem
First name
Antonio
School
Beacon Hill School
Country
Hong Kong
Age
0

150*4 = 600
160*2 = 320
600-320 = 280
320+280 = 600
280/4 = 70

^That was my working out^

There are 70 rats and 160 children.