journelising the following? dpereciation of plant & machinery rs 30000/- interest accrued but not received Rs 15000/- prepaid insurance Rs 10000/- drawings of cash Rs 5000/- withdrew goods for personnel use Rs 2000/- what is cost centre? How do you verify the correctness of material control system? How many directors are required at a minium for Private ltd and public ltd companies? How do you compute the following ratios? current ratio net profit ratio gross profit ratio debt service coverage ratio sales turnover ratio