A stall was selling flowers. ¹₅ of the earnings are from the sale of 7 sunflowers and 19 lilies. Of the rest of the earnings, ³₅ are from the sale of sunflowers and ²₅ are from the sale of lilies. Each lily costs twice as much as each sunflower. How many flowers were sold?

7 sunflowers and 19 lilies	Rest of the earnings		Total earnings
1x5	4x5
	Roses	Carnations
	3x4	2x4
5	12	8	25

Fraction of the earnings left after the sale of 7 sunflowers and 19 lilies
= 1 - ¹₅
= ⁴₅ 

The rest of the earnings is repeated. LCM of 4 and 5 is 20.

Cost of 1 sunflower = 1 u
Cost of 1 lily = 2 u

Cost of 7 sunflowers = 7 x 1 u = 7 u
Cost of 19 lilies = 19 x 2 u = 38 u

Total cost of 7 sunflowers and 19 lilies
= 7 u + 38 u
= 45 u

⁵₂₅ of the earnings → 45 u 
¹₂₅ of the earnings → 45 u ÷ 5 = 9 u 

¹²₂₅ of the earnings → 12 x 9 u = 108 u 

Number of sunflowers sold that contributed to the rest of the earnings
= 108 u ÷ 1 u
= 108

⁸₂₅ of the earnings → 8 x 9 u = 72 u

Number of lilies sold that contributed to the rest of the earnings
= 72 u ÷ 2 u
= 36

Number of flowers sold
= 7 + 19 + 108 + 36
= 170

Answer(s): 170