Copyright © University of Cambridge. All rights reserved.
'Forming Groups' printed from https://nrich.maths.org/
Seventy pupils (37 boys and 33 girls) are divided into two groups, with 40 pupils in Group 1 and 30 pupils in Group 2.
What is the difference between the number of boys in Group 1 and the number of girls in Group 2?
If you liked this problem,
here is an NRICH task which challenges you to use similar mathematical ideas.