NumberofchocolatespurchasedbySumitfromshopA30100times200ndash4560ndash4515NumberofchocolatespurchasedbySumitfromshopB25100times200ndash3050ndash3020NumberofchocolatespurchasedbySumitfromshopD20100times200ndash1040ndash1030Requiredaverage15203032166asymp22