A firm sells goods of Rs 1,00,000 every month. 20% of the sale is made on cash terms, 40% on net 30 and the rest 40% on net 60. If the sale begins in January, find out the cash balance with the firm...

A firm sells goods of Rs 1,00,000 every month. 20% of the sale is made on cash terms, 40% on net 30 and the rest 40% on net 60. If the sale begins in January, find out the cash balance with the firm on the sale account during January, February and March.