Question

In an auditorium, seats are arranged in a row and column. The number of row was equal to the number of seats in each row. When the number of row was doubled and the number of seat in each row was reduced by 10, the column was reduced by 10, the total number of seat increased by 300. And column was tripled and the number of seat in each column reduced by 8. FIND​

Answer 1

Let the number of seats is x

then the seats in the arrangement is x

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