Question
Opal is standing in the hall. There are 7 pupils to her right and 4 pupils to her left. There are 4 rows in front of her and 8 rows behind her. If there are equal number of pupils in each row, how many pupils are there in the hall?
4 m

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Opal is standing in the hall. There are 7 pupils to her right and 4 pupils to her left. There are 4 rows in front of her and 8 rows behind her. If there are equal number of pupils in each row, how many pupils are there in the hall?