# The ratio of the number of boys to the number of girls in a hall was 12 : 7 If there were 147 girls in the hall, how many more boys than girls were there

The ratio of the number of boys to the number of girls = 12/7

given there were 147 girls, that is if x number of people are there then 7/19 parts are girls, so

There were a total of 329 people out of which 147 are girls. So the number of boys = 399-147 = 252 boys

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