एक कॉलेज का छात्र अपनी पॉकेट मनी का 75% खर्च करता है। जब उसकी पॉकेट मनी में 20% की वृद्धि हुई, तो उसके खर्च में भी 15% की वृद्धि हुई। उसकी बचत में कितने प्रतिशत की वृद्धि हुई?

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?