The pie chart below shows how Mr. Brown spent his salary in the month of January, 2010. He spent GHC180.00 on rent. i. Find angle y representing savings for the month. ii. What is the man's salary for the month? iii. By how much does expenditure on others exceed that on clothing.

Add the given angles for Food, Others, Clothing, and Rent.

$$108^\circ + 84^\circ + 60^\circ + 72^\circ = 324^\circ$$

$$y = 360^\circ - 324^\circ = 36^\circ$$

The angle representing savings is $\boxed{\text{36}^\circ}$.

Calculate the monetary value per degree.

$$\text{Value per degree} = \frac{\text{GH¢}180.00}{72^\circ} = \text{GH¢}2.50/\text{degree}$$

Multiply the value per degree by $360^\circ$ to find the total salary.

$$\text{Total Salary} = \text{GH¢}2.50/\text{degree} \times 360^\circ = \text{GH¢}900.00$$

The man's salary for the month is $\boxed{\text{GH¢}900.00}$.

The angle for "Others" is $84^\circ$.

$$\text{Expenditure on Others} = 84^\circ \times \text{GH¢}2.50/\text{degree} = \text{GH¢}210.00$$

The angle for "Clothing" is $60^\circ$.

$$\text{Expenditure on Clothing} = 60^\circ \times \text{GH¢}2.50/\text{degree} = \text{GH¢}150.00$$

$$\text{Difference} = \text{GH¢}210.00 - \text{GH¢}150.00 = \text{GH¢}60.00$$

The expenditure on others exceeds that on clothing by $\boxed{\text{GH¢}60.00}$.