Girls = 4 units = 28 => 1 unit = 7. Boys = 7 units = 49. Total = 49 + 28 = 77 students.
लड़कियाँ = 4 इकाई = 28 => 1 इकाई = 7। लड़के = 7 इकाई = 49। कुल = 49 + 28 = 77 छात्र।