The ratio of the number of seats and bagels to the number of plain bagel sheba is one third

1.       The ratio of the number of seats and bagels = the number of plain bagel sheba
=> 1/3
Thus this simple shows like this
=> 1/3 : 2/3 (1/3 is the number of seats and bagels and 2/3 is the number of plaing bagel sheba)
=> in decimal
=> 0.33 : 0.67
=> 0.33 + 0.67 = 1.00
Thus, the number of plain bagel sheba Is higher than the number of seats and bagel.