Answer:
The original price of the gift was $40.
Step-by-step explanation:
Let the original price of the gift be = x
Discount of 10% on the gift and each sister paid $9 means a total of \(4\times9=36\) dollars
We can write this information mathematically like :
\(x-0.10x=36\)
Solving for x now;
\(0.90x=36\)
x = $40
So, the original price of the gift was $40.