A stall was selling flowers. ¹₃ of the earnings are from the sale of 6 marigolds and 11 sunflowers. Of the rest of the earnings, ³₅ are from the sale of marigolds and ²₅ are from the sale of sunflowers. Each sunflower costs four times as much as each marigold. How many flowers were sold?

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

Fraction of the earnings left after the sale of 6 marigolds and 11 sunflowers
= 1 - ¹₃
= ²₃ 

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

Cost of 1 marigold = 1 u
Cost of 1 sunflower = 4 u

Cost of 6 marigolds = 6 x 1 u = 6 u
Cost of 11 sunflowers = 11 x 4 u = 44 u

Total cost of 6 marigolds and 11 sunflowers
= 6 u + 44 u
= 50 u

⁵₁₅ of the earnings → 50 u 
¹₁₅ of the earnings → 50 u ÷ 5 = 10 u 

⁶₁₅ of the earnings → 6 x 10 u = 60 u 

Number of marigolds sold that contributed to the rest of the earnings
= 60 u ÷ 1 u
= 60

⁴₁₅ of the earnings → 4 x 10 u = 40 u

Number of sunflowers sold that contributed to the rest of the earnings
= 40 u ÷ 4 u
= 10

Number of flowers sold
= 6 + 11 + 60 + 10
= 87

Answer(s): 87