Answer: 1). 2 roses and 2 tulips
2). 1 rose and 3 tulips
3). 3 roses and 1 tulip
Explanation: In combining the flowers, the customer considers the amount in hand ensuring he spends at least $100 but not more than $175.
1). He can combine 2 roses and 2 tulips at the cost of ($40x2) + ($35×2) = $80 + $70 = $150
2). He can choose to buy 1 rose and 3 tulips at the cost of $40 + ($35×3) = $40 + $105 = $145
3). A combination of 3 roses and 1 tulip is also possible at a cost of ($40×3) + $35 = $120 + $35 = $155
