Answer:
Note: <em>The complete question is attached as picture below</em>
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We are add the previous month +10% to get that month's amounts
                               Sales Budget
                        January     February    March
Cash sales      $50,000   <u>$55,000</u>    <u>$60,500</u>
Credit sales    $120,000  <u>$132,000</u>  <u>$145,200</u>
Total sales      $170,000 <u>$187,000</u>  <u>$205,700</u>
<u>Workings</u>:
February
Cash sales = 50,000+(50,000*10%) = $55,000
Credit sales= 120,000+(120,000*10%) = $132,000
March
Cash sales = 55,000+(55,000*10%) = $60,500
Credit sales= 132,000+(132,000*10%) = $145,200