Let the amount invested by Gopal and Ram be 2x and 3x respectively. Gopal further invested Rs 2 lakh. Given (2x + 2) = 3x or x = 2 lakh. Hence, initial amount paid by Gopal and Ram to Krishna is 4 lakh and 6 lakh respectively. Hence, total money invested by them together = (6 + 6) = 12 lakh.

The total revenue generated = 12 × 25% = 3 lakh. The ratio of revenue from coconut and lemon trees are in the ratio 3 : 2. Hence, revenue from coconut = Rs 1,80,000 and revenue from lemons = Rs 1,20,000.
So, output per tree for coconuts = $\left(\frac{1,80,000}{500}\right)$ = 360.