Question
A total of 830 pupils sat for the Chinese mock test. 12 of the girls and 78 of the boys passed the mock test. The same number of boys and girls failed the mock test. How many more boys than girls passed the mock test?
4 m

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A total of 830 pupils sat for the Chinese mock test. 12 of the girls and 78 of the boys passed the mock test. The same number of boys and girls failed the mock test. How many more boys than girls passed the mock test?