Mathematics · Percentages

A skill development institute offers three courses: Alpha, Beta and Gamma. In the previous month, the number of enrollments were as follows: Alpha: 9,000 students Beta: 11,000 students Gamma: 7,000 students In the current month, the enrollments in Alpha increased by 25%, enrollments in Beta decreased by 10% and enrollments in Gamma increased by 30%. The institute earns ₹50 per Alpha enrollment, ₹65 per Beta enrollment and ₹80 per Gamma enrollment. However, the institute introduced a 7% promotional discount on Gamma course fee in the current month. By what percentage has the company's total earnings increased compared to the previous month? (Round off the answer to two decimal places.)