The table shows the percentage (%) distribution of production of bicycles of two different models (L and M) by the six companies A-F, ratio of production of model L. to that of M, and the percent (%) profit earned on these two models. Production cost of the six companies together is Rs 64 Crore.

Company Wise Bicycle Production and Profit

Company	% Distribution of Production of Bicycles	Production Ratio		% Profit
		L	M	L	M
A	20%	13	7	25%	32%
B	14%	9	5	28%	30%
C	22%	6	5	20%	24%
D	13%	6	7	35%	25%
E	10%	2	3	24%	21%
F	21%	11	10	30%	20%

The ratio of the profit earned on model L. by Company B to that of model M by Company D is

The correct option is 36:25.

Let us find the step-by-step ratio of the profit earned on model L by Company B to that on model M by Company D.
Let the total cost of production of all six companies together be denoted by C. We are given that C = Rs 64 Crore.

Step 1: Calculate the profit earned on model L by Company B
From the table, the parameters for Company B are:
- Percentage distribution of production: 14% of the total production cost.
- Production ratio of L to M: 9 : 5.
- Percent profit on model L: 28%.

Thus, the cost of production for Company B is:
$${\text{Cost}}_{\text{B}}=14\%\times C$$
Since the ratio of production cost of model L to model M for Company B is 9 : 5, the cost of production of model L by Company B is:
$${\text{Cost}}_{\text{B, L}}=\frac{9}{9+5}\times {\text{Cost}}_{\text{B}}=\frac{9}{14}\times \left(14\%\times C\right)=9\%\times C$$
The profit earned on model L by Company B is 28% of its production cost:
$${\text{Profit}}_{\text{B, L}}=28\%\times {\text{Cost}}_{\text{B, L}}=0.28\times 0.09\times C$$

Step 2: Calculate the profit earned on model M by Company D
From the table, the parameters for Company D are:
- Percentage distribution of production: 13% of the total production cost.
- Production ratio of L to M: 6 : 7.
- Percent profit on model M: 25%.

Thus, the cost of production for Company D is:
$${\text{Cost}}_{\text{D}}=13\%\times C$$
Since the ratio of production cost of model L to model M for Company D is 6 : 7, the cost of production of model M by Company D is:
$${\text{Cost}}_{\text{D, M}}=\frac{7}{6+7}\times {\text{Cost}}_{\text{D}}=\frac{7}{13}\times \left(13\%\times C\right)=7\%\times C$$
The profit earned on model M by Company D is 25% of its production cost:
$${\text{Profit}}_{\text{D, M}}=25\%\times {\text{Cost}}_{\text{D, M}}=0.25\times 0.07\times C$$

Step 3: Find the ratio of the two profits
Now we divide the profit of model L by Company B by the profit of model M by Company D:
$$\text{Ratio}=\frac{{\text{Profit}}_{\text{B, L}}}{{\text{Profit}}_{\text{D, M}}}=\frac{28\%\times 9\%\times C}{25\%\times 7\%\times C}$$
Canceling the common percentage units and total cost C:
$$\text{Ratio}=\frac{28\times 9}{25\times 7}$$
Since $28/7=4$, we simplify the expression:
$$\text{Ratio}=\frac{4\times 9}{25}=\frac{36}{25}$$
Thus, the required ratio is 36:25.