Solve Problems Using Percentages (Higher)

Interactive macro-enabled MS-Excel spreadsheet. Contents: Find a pupil’s % over-estimation of his age compared to a database. Find the % increase in speed given times to run 1500 m & one mile. Find tonight’s income at a theatre & express it as a % of full-house. Find the income, profit, profit per bottle & % profit on water bottles. Find the % of a total taken for cleaning cars after paying a % share. Find the price of a house & deposit given the terms of a mortgage. Find the % salary leftover given rent, bills & savings : rent ratio. Find the % profit on jam if I sell a % at full price & discount the rest. Find the % of a screen a film occupies given different aspect ratios. Find the new value & overall % change after a combined % change. Find the original value given the outcome of a combined % change. Find the multiplier m & periodical rate of increase r or decrease r. Find the % change in X given it is the product or quotient of Y & Z.