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                     Girl           Boy          Adult

Ballons         3                2               1

No. Of           10u          5u               9u

Total no of balloons –> 30u+10u+9u

           49u = 784

               u = 16

There are 15u children

15×16 = 240

240 children.

 

Note:

3/8 are adults

So 3 part adults and 5 part children. 

The total ‘radio’ for the children is 2+1=3

So we expand 3×5 units, 15u for the children and 3x3units, 9u for adults.

 

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Thanks so much for taking the time to answer this question 🙂

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