A householder spent his monthly salary of ₹7,200 on different items. If he spent ₹4,000 on food and ₹400 on education, then the central angles respectively are:

200°,20°

Rs. 7200 = 360 ̊

Re 1 = \(\frac{360 ̊}{7200}\) = \(\frac{1}{20}\)

⇒ Central angle on food = \(\frac{1}{20}\) x 4000 = 200 ̊

⇒ Central angle on education = \(\frac{1}{20}\) x 400 = 20 ̊