Students of Primary, Middle, Secondary and Sr. Secondary classes collected donation for a Relief Fund as shown in the pie chart. If the donation collected from Middle classes was ₹6,750, then what would be the total amount of money collected by Secondary and Sr. Secondary classes?

₹11,700

Donation from middle class = 30% of donation from all classes

ATQ,

30% of donation from all classes= 6750

Donation from all classes = \(\frac{6750 }{30}\) × 100  = 22500

Total amount of money collected by Secondary and Sr. Secondary classes

= \(\frac{27 + 25  }{100}\) × 22500 

= \(\frac{52 }{100}\) × 22500

= Rs. 11700