Continuation from previous post.
This is also from P5 Challenging Math, Unit 1. It's a Challenge question where the solution doesn't show workings. The book's answer was 33, which is different from Brian's answer. Please let us know which answer is right, thanks; and also if the model is drawn correctly.
In a school, there are 45 more students in Primary 5 than in Primary . In Primary 4, there are 18 more girls than boys. There are 12 more boys in Primary 5 than in Primary 4. How many more girls than boys are there in Primary 5?
Solutions may be sent to mathsingapore at gmail dot com. Thanks!