Correct Answer  Option 2 : 167 : 365
Given: D invested Rs. 7680 for two years. but decreased the amount by 2000 after 1 year. E invested 16400 for 3 years. but decreased his amount by 10000 after 1 year.
Formula: Ratio of profits after investment = ratio of sum of the product of investment amount and the time invested for.
Calculation:
D

E

7680 × 1 + 5680 × 1

16400 × 1 + 6400 × 2

7680 + 5680

16400 + 12800

13360

29200

Required ratio = 167 : 365