Area and Percentages

To increase by 24% you would multiply by

• 124

• 0.24

• 1.24

• 24

To decrease something by 12% you would multiply by ...

• 0.12

• 0.78

• 1.12

• 0.88

Increase 220 by 40%

• 8800

• 260

• 88

• 308

What is Francis trying to calculate

• 8% increase

• 8% reduction

• 92% reduction

• 92% increase

The cost of a burger when from £5 to £6. What is the percentage increase in the price of the burger

• £1

• 20%

• 16.3%

• 120%

The length of a rectangle is increased by 20%. The width of the rectangle is decreased by 20%. What is the effect on the area of the rectangle?

• no change

• 4% increase

• 4% decrease

• 44% increase

A jacket is reduced in a sale by 20%. A customer has a loyalty card for a further 10% off the price. What percentage has the jacket now reduced by?

• 2%

• 30%

• 28%

• 8%

In a sale, normal prices are reduced by 20%. The sale price of a digital camera is £195.60. Work out the normal price of the digital camera.

• 238.48

• £156.48

• £234.72

• £244.50

A shop advertised "Everything half price in our sale", but also now advertised that there is "An additional 15% off sale prices". Overall, this is equivalent to what reduction on the original prices?

• 35%

• 65%

• 80%

• 57.5%

Prices are reduced by 27% in a sale at SuperMart. Georgia buys a TV, saving £75.60 on the original price. Calculate the original price

• 103.56

• £280

• £2.80

• None of these