Answer:
Ashok received 5/23 of the paratha.
Tanya received 2/3 of the paratha.
Dhruvi received 9/10 of a paratha.
To find out how much of the paratha was left with Dhruvi, you need to know the total amount of the paratha and then subtract the portions received by Ashok, Tanya, and Dhruvi.
However, you haven't provided the total amount of the paratha. Once you have that information, you can calculate how much is left with Dhruvi by subtracting the portions given to Ashok, Tanya, and Dhruvi from the total paratha.
Explanation: