The annual expenditure of a company in a certain year is given below : 

Head	Expenditure (in Rs. crores)
Salary	65
Advertisement	10
Machinery	85
Electricity and water	15
Transport	25
Others	30

If the above information is represented by a bar graph (using a scale 10 crores = 1 cm), what will be the difference between the length of the bars for machinery and transport ?