In a school there are 362 boys and 257 girls. 403 more girls joined the school. How many more girls than boys does the school have?
There are 362 boys and 257 girls in the school, which means there are 115 more girls than boys. 

When 403 more girls join the school, there will be 660 girls and 362 boys, which means there will be 298 more girls than boys.