A can complete 12% of a piece of work in 15% of the prescribed time. A and B work for the full duration of the prescribed time, and the work is completed on time. What part of the work does B complete?

A can complete 12% of a piece of work in 15% of the prescribed time. A and B work for the full duration of the prescribed time, and the work is completed on time. What part of the work does B complete?
A, किसी कार्य के 12% भाग को निर्धारित समय के 15% समय में पूरा कर सकता हैं। Aऔर B निर्धारित समय की पूरी अवधि तक कार्य करते हैं, और कार्य समय पर पूरा हो जाता हैं। B कार्य का कितना भाग पूरा करता हैं?