A stall was selling flowers. ¹₅ of the earnings are from the sale of 10 daffodils and 19 tulips. Of the rest of the earnings, ²₃ are from the sale of daffodils and ¹₃ are from the sale of tulips. Each tulip costs twice as much as each daffodil. How many flowers were sold?

10 daffodils and 19 tulips	Rest of the earnings		Total earnings
1x3	4x3
	Roses	Carnations
	2x4	1x4
3	8	4	15

Fraction of the earnings left after the sale of 10 daffodils and 19 tulips
= 1 - ¹₅
= ⁴₅ 

The rest of the earnings is repeated. LCM of 4 and 3 is 12.

Cost of 1 daffodil = 1 u
Cost of 1 tulip = 2 u

Cost of 10 daffodils = 10 x 1 u = 10 u
Cost of 19 tulips = 19 x 2 u = 38 u

Total cost of 10 daffodils and 19 tulips
= 10 u + 38 u
= 48 u

³₁₅ of the earnings → 48 u 
¹₁₅ of the earnings → 48 u ÷ 3 = 16 u 

⁸₁₅ of the earnings → 8 x 16 u = 128 u 

Number of daffodils sold that contributed to the rest of the earnings
= 128 u ÷ 1 u
= 128

⁴₁₅ of the earnings → 4 x 16 u = 64 u

Number of tulips sold that contributed to the rest of the earnings
= 64 u ÷ 2 u
= 32

Number of flowers sold
= 10 + 19 + 128 + 32
= 189

Answer(s): 189