A stall was selling flowers. ¹₅ of the earnings are from the sale of 10 daisies and 15 orchids. Of the rest of the earnings, ²₅ are from the sale of daisies and ³₅ are from the sale of orchids. Each orchid costs thrice as much as each daisy. How many flowers were sold?

10 daisies and 15 orchids	Rest of the earnings		Total earnings
1x5	4x5
	Roses	Carnations
	2x4	3x4
5	8	12	25

Fraction of the earnings left after the sale of 10 daisies and 15 orchids
= 1 - ¹₅
= ⁴₅ 

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

Cost of 1 daisy = 1 u
Cost of 1 orchid = 3 u

Cost of 10 daisies = 10 x 1 u = 10 u
Cost of 15 orchids = 15 x 3 u = 45 u

Total cost of 10 daisies and 15 orchids
= 10 u + 45 u
= 55 u

⁵₂₅ of the earnings → 55 u 
¹₂₅ of the earnings → 55 u ÷ 5 = 11 u 

⁸₂₅ of the earnings → 8 x 11 u = 88 u 

Number of daisies sold that contributed to the rest of the earnings
= 88 u ÷ 1 u
= 88

¹²₂₅ of the earnings → 12 x 11 u = 132 u

Number of orchids sold that contributed to the rest of the earnings
= 132 u ÷ 3 u
= 44

Number of flowers sold
= 10 + 15 + 88 + 44
= 157

Answer(s): 157