Study the Pie charts given below which shows the operating profit of a business for two years. On the basis of these pie charts answer the following questions.

The increase in operating profit of 1991-92 over 1990-91 is 

23%

Operating profit 1990-91 - 130,00,000

Operating profit 1991-92 - 160,00,000

Difference = 30,00,000

Increase in profit: \(\frac{30,00,000}{130,00,000}\) x 100

Increase in profit: 23.07% = 23%(round off)