On 6 November to 9 November, an average of 54 carnations were sold and from 10th November to 14 November, an average of 26 carnations were sold. $270 worth of carnations were sold from 15 November to 25 November. Given that a carnation was sold for $5, find the average number of carnations sold from 6 November to 25 November.
Number of carnations sold from 15 November to 25 November
= 270 ÷ 5
= 54

Number of days from 6 November to 9 November
= 9 - 6 + 1
= 4

Number of days from 10 November to 14 of November
= 14 - 10 + 1
= 5

Total number of carnations sold
= (4 x 54) + (5 x 26) + 54
= 216 + 130 + 54
= 400

Number of days from 6 November to 25 November
= 25 - 6 + 1
= 20

Average number of carnations sold
= 400 ÷ 20
= 20

Answer(s): 20