405 sweets were distributed equally among children in such a way that the number of sweets received by each
child is 20% of the total number of children. How many sweets did each child receive ?
Let the total number of children be `x`
Then, `x` x (20% of `x`) = 405 `hArr 1/5 x^2 = 405 hArr x^2 = 2025 hArr x` = 45.
`:.` Number of sweets received by each child = 20% of 45 = 9.
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