Miss Lee distributed some stickers equally among 15 boys and 7 girls. Each boy gave 3/5 of his share to all the girls. As a result, the girls had a total of 768 stickers. What was the total number of stickers Miss Lee had at first?

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she had x stickers
total 22 kids
each got x/22
15 boys
they gave 3/5 of x/22 to the girls
So they gave a total of 15* 3x/110 = 45x/110 stickers to the girls
7 girls - they have a total of 7*(x/22)=>7x/22
Boys gave 45x/110
7x/22 + 45x/110 = 768
LCD = 110
35x+45x= 110*768
80x=110*768
x=110*768/80
x= 1056 stickers

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