percentages and Reverse Percentages

A coat costs £48.75 in a sale which is giving 25% off the original cost.

What was the original cost of the coat?

• £65.00
• £70.00
• £60.00
• £64.00

A house costs £102,600 after an 8% increase in house prices.

What was the original cost of the house?

• £95,000
• £100,000
• £94,815
• £90,000

A house costs £102,600 after an 8% increase in house prices.

What was the original cost of the house?

• £95,000
• £100,000
• £94,815
• £90,000

• £64

• £100

• £106.67

• £60

• £42

• £15.12

• £35.28

• £18

1) A camera costs £180 in a 10% sale. What was the pre-sale price?

• £200

• £18

• £198

• £162

8) An engine modification improved the fuel consumption of a car by 27% to 17.2 km per litre. What was the fuel consumption before the modification?

• 4.644

• 21.844

• 13.543

• 12.556

70% of the books on a bookshelf are English books. If there are 35 English books on the bookshelf, find the total number of books on the bookshelf.

• 20

• 50

• 47

• 40

4) The world’s tiger population has decreased by 95% since 1910 and is now believed to be as low as 3200. If these figures are correct, what was the tiger population in 1910?

• 3040

• 160

• 3386

• 64000

• £75

• £48

• £50

• £72