Question
There are 200 girls and 100 boys in a school.
120 of them are Primary 3 pupils.
The rest are Primary 4 pupils.
How many Primary 4 pupils are there in the school?
3 m

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There are 200 girls and 100 boys in a school.
120 of them are Primary 3 pupils.
The rest are Primary 4 pupils.
How many Primary 4 pupils are there in the school?