Question

BIG POINTS!!!In a hall there are 2100 seats. In a row there are either 45 or 40 seats. There are three times more rows with 45 seats than with 40 seats. How many rows are there?

Answer 1

45x + 40y = 2100

2100/(3x45+40) = 12

12 x 4 = 48

48 rows

Explanation:

Answer 2

48 Rows

Explanation:

45x + 40y = 2100

2100/(3x45+40) = 12

12 x 4 = 48