Download
slide1 n.
Skip this Video
Loading SlideShow in 5 Seconds..
Percentage increase PowerPoint Presentation
Download Presentation
Percentage increase

Percentage increase

105 Vues Download Presentation
Télécharger la présentation

Percentage increase

- - - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript

  1. Percentage increase

  2. Percentage increase Calculate the cost of each item. An antique lamp, bought 20 years ago for £50, has increased in value by 60%. 160% × £50 = 1.6 × £50 = £80 A jacket costing £86 requires VAT at 17.5% to be added. 117.5% × £86 = 1.175 × £86 = £101.05

  3. Percentage decrease

  4. Percentage decrease

  5. Reverse percentages

  6. Reverse percentages The cost of a solar panel system to heat a house, including VATat 17.5%, is £8812.50. What is the cost beforeVAT is included? What would the cost have been, including VAT, if thesystem had been purchased in November 2009 when VAT was 15% The solar panels reduce the £790 yearly heating bills by 85%. How long will it be before the system has paid for itself?