# Excel | Building models exercise | Basic modelling for star XL 07

This exercise is provided to allow potential course delegates to choose the correct Wise Owl Microsoft training course, and may not be reproduced in whole or in part in any format without the prior written consent of Wise Owl.

 Software ==> Excel  (151 exercises) Version ==> Excel 2010 and later Topic ==> Building models  (2 exercises) Level ==> Average difficulty Subject ==> Excel training
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You have been commissioned  by a famous celebrity (definitely A list) to model their expenditure and income, to see why they keep running into debt.  Open the workbook in the folder above to begin.

Create the following inputs:

• A basic living allowance of £20,000 for each of the first 3 months followed by £30,000 for each of the remaining 9 months
• An amount for the star's overseas homes starting at £10,000 for the first month and rising by £1,000 a month to £21,000 in the last month
• An amount for sex, drugs and rock and roll of £5,000 for each of the first two months, then £6,000 for each of the remaining 10 months

Add a revenue section to the Inputs sheet.  This consists of two separate inputs:

• A month-by-month fee, beginning at £10,000 in month 1 and rising in equal £5,000 amounts to £65,000 in month 12
• A single-cell input for a multiplier for guest appearances, etc, initially equal to 150% (this should go in column D)

Calculate the star's revenue, costs and "profit" on the calculations sheet - here is what it might look like, with suitable number formatting applied:

Notice that the positive and negative numbers line up neatly

Save this workbook as Looks gloomy.xls, then close it down.

You can unzip this file to see the answers to this exercise, although please remember this is for your personal use only.