Bennett distribution company, a subsidiary of a major cosmetics manufacturer Bavlon, is forecasting the zonal sales for the next year. Zone I with current yearly sales to Rs 193.8 lakh is expected to achieve a sales growth of 7.25%. Zone II with current sales of Rs 79.3 lakh is expected to grow by 8.2% and Zone III with sales of Rs 57.5 lakh is expected to increase sales by 7.15%. What is the Bennett's expected sales growth for the next year ?