In a 360 degree investment plan for medical departments 81 degree is for cardiology, 63 degree for gynaecology, 54 degree for pediatrics, 36 degrees for neurology, 31 degree for anaesthesia, 45 degree for psychiatry and 50 degree for endocrinology.
By how much is the expenditure on paediatrics less than that on cardiology?




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It is a Pi chart of investments.

Proportion of total investment on paediatrics = 54/360
Proportion of total investment on cardiology = 81/360

Difference = 33/360

Expenditure on paediatrics is less than that on cardiology by :
      = 27/81  * 100 =  33.333 %