A room contains 140 pillows. The number of pillows per row is 1 less than twice the number of rows. Find the number of rows and number of pillows per row.
(2r-1) * r = 140
2r^2 - r -140 = 0
Hmmmm,,,,, I don't think this has an answer ! You are sure it is 140 pillows?
19 x 10 rows = 190
17 x 9 rows = 153
15 pillows/row x 8 rows = 120 pillows
sorry it was a typo it's 120 pillows.