Answer:
Since you know that 15 vases are worth 2,250 rupees, then to find how much 25 cost, you can first find how much each costs individually.
To find how much each vase cost, you can just divide the total cost of 15 vases, and the amount of vases:
2250/15 = 150
Each vase costs 150 rupees.
Now to find how much 25 vases cost, you can just multiply the cost per each flower vase, by the total amount of vases:
150 * 25 = 3,750
25 flower vases cost's 3,750 rupees.
Step-by-step explanation:
Hope it helps! =D