On the average 50 of credit sales are paid for in the

Question

Here is a forecast of sales by national Bromide for the first four months of 2010 (figures in $ thousands)

                                MONTH 1      MONTH 2     MONTH 3     MONTH 4

CASH SALES               15                 24                18               14

SALES ON CREDIT       100               120               90               70

On the average 50% of credit sales are paid for in the current month, 30% are paid in the next month, and the remainder are paid in the month after that. What is the expected cash inflow from operations in months 3 and 4?