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অথবা
আপনার পছন্দের থিম বেছে নিন।
The fee for a course was increased by x percent from that of the previous year. Arif, a meritorious student, got y percent waiver on his course fee for his extraordinary performance. If the fee collected from Arif is 80% of the course fee of the previous year, what is the value of yyy in terms of xxx?