Answer: z = 210
Step-by-step explanation: Let's assume the original price of the present was x dollars.
Amanda agreed to pay 30% of the original price, so her contribution was 0.3x dollars.
The remaining amount to be paid is (1 - 0.3)x = 0.7x dollars.
Gabriel agreed to pay 2/5 of the remaining amount, so he paid (2/5)(0.7x) = 0.28x dollars.
The balance amount to be paid by Daniel is (1 - 0.3 - 2/5)(x) = 0.42x dollars.
When the price increased by 25%, the new price became 1.25x dollars.
We can set up an equation based on Amanda's contribution and solve for x:
0.3x = 63
x = 210
Therefore, the original price of the present was $210.