Box = b Parrots = p b/p = number of days it can support the parrots Half a dozen = 6 (A dozen is 12) 1/6 = 15 To work out the percentage of '6' '5' is, use the equation (5/6)*100 = 83.333.... Meaning that with one less bird, the box will support the birds for 16.666... (100 - 18.333...) longer (15/100)*116.666... = 17.4999.... The box will sustain the parrots for 17.5 days
