Final answer:
The elder daughter will receive Rs 20,000 more than the younger daughter.
Step-by-step explanation:
The ratio of the elder daughter's age to the younger daughter's age is 12:8, or simplified to 3:2.
To divide Rs 1,00,000 between the daughters based on the ratio of their ages, we need to find the total number of parts in the ratio, which is 3+2=5.
Then, we divide Rs 1,00,000 by 5 to find the value of each part, which is Rs 20,000.
The elder daughter will get 3 parts, which is 3 x Rs 20,000 = Rs 60,000, and the younger daughter will get 2 parts, which is 2 x Rs 20,000 = Rs 40,000.
Therefore, the elder daughter will receive Rs 60,000 - Rs 40,000 = Rs 20,000 more than the younger daughter.