A stall was selling flowers. ¹₃ of the earnings are from the sale of 11 sunflowers and 18 roses. Of the rest of the earnings, ²₅ are from the sale of sunflowers and ³₅ are from the sale of roses. Each rose costs thrice as much as each sunflower. How many flowers were sold?

11 sunflowers and 18 roses	Rest of the earnings		Total earnings
1x5	2x5
	Roses	Carnations
	2x2	3x2
5	4	6	15

Fraction of the earnings left after the sale of 11 sunflowers and 18 roses
= 1 - ¹₃
= ²₃ 

The rest of the earnings is repeated. LCM of 2 and 5 is 10.

Cost of 1 sunflower = 1 u
Cost of 1 rose = 3 u

Cost of 11 sunflowers = 11 x 1 u = 11 u
Cost of 18 roses = 18 x 3 u = 54 u

Total cost of 11 sunflowers and 18 roses
= 11 u + 54 u
= 65 u

⁵₁₅ of the earnings → 65 u 
¹₁₅ of the earnings → 65 u ÷ 5 = 13 u 

⁴₁₅ of the earnings → 4 x 13 u = 52 u 

Number of sunflowers sold that contributed to the rest of the earnings
= 52 u ÷ 1 u
= 52

⁶₁₅ of the earnings → 6 x 13 u = 78 u

Number of roses sold that contributed to the rest of the earnings
= 78 u ÷ 3 u
= 26

Number of flowers sold
= 11 + 18 + 52 + 26
= 107

Answer(s): 107