In a school, 70 % of the members in the band and 60% of the members in the choir are girls. Both the band and the choir have the same number of boys. The band has 20 more girls than the choor. How man

In a school, 70 % of the members in the band and 60% of the members in the choir are girls. Both the band and the choir have the same number of boys. The band has 20 more girls than the choor. How many members are there in the band?

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