Fill in the missing amounts

Answers:
Mar Abr May
Receipts $1,155 $1,250 $945
Expenses $1,100 $990 $900
Net Cash Flow $55 $260 $45
Cumulative Balance $55 $315 $360
Solution:
1) Mar
Cumulative Balance Mar =Net Cash Flow Mar
Cumulative Balance Mar =$55
2) Abr
Net Cash Flow Abr=Receipts Abr-Expenses Abr
Net Cash Flow Abr=$1,250-$990
Net Cash Flow Abr=$260
3) May
Net Cash Flow May=Receipts May-Expenses May
$45=Receipts May-$900
Solving for Receipts May: Adding $900 both sides of the equation:
$45+$900=Receipts May-$900+$900
$945=Receipts May
Receipts May =$945