यदि पेट्रोल की कीमत ₹90/लीटर से बढ़कर ₹110/लीटर हो जाती है, तो एक व्यक्ति को अपनी खपत में कितने प्रतिशत की कमी करनी होगी ताकि पेट्रोल पर होने वाला कुल व्यय समान रहे (दो दशमलव स्थानों तक अनुमानित)?

In a town with 30,000 professionals, teachers make up 11% of the total professionals. If 46% of teachers are male, what is the number of female teachers in the town?

In a town's professional breakdown, doctors represent 18% and clerks represent 8% of the total professionals. If the number of doctors is 3000 greater than the number of clerks, what is the total number of professionals in the town?