Answer:
Total Cash inflows from sales = $36640
Step-by-step explanation:
given data 
Month Sales 
January $25,000 
February $30,000 
March $35,000 
April $40,000
to find out 
The total cash receipts during April
solution
first we get here Cash sales of April month that is express as 
Cash sales of April month = $40,000 × 30%
Cash sales of April month = $40,000 × 0.30
Cash sales of April month = $12000
and 
now we get collection from credit sale of April that is 
collection from credit sale = ( $40000× 70% ) × 25%
collection from credit sale = ( $40000× 0.70 ) × 0.25
collection from credit sale = $7000
and 
Collection from Credit sales of March that is 
Collection from Credit sales = ( $35000× 70% ) × 72%
Collection from Credit sales = ( $35000× 0.70 ) × 0.72
Collection from Credit sales = $17640 
so 
Total Cash inflows from sales will be 
Total Cash inflows from sales = $12000 + $7000 + $17640
Total Cash inflows from sales = $36640