Reverse percentages

I bought a top for £24. It was in the sale with 20% off. What was the original cost of the top?

• £28

• £30

• £32

• £34

Tags

CCSS.6.RP.A.3C

I have just paid £88 for my water bill. This is an increase of 10% from last year. How much did I pay last year?

• £80

• £70

• £90

• £78

Tags

CCSS.6.RP.A.3C

A radio sells for £63 after a 40% increase in the cost price. Find the cost price.

• £40

• £45

• £50

• £55

Tags

CCSS.6.RP.A.3C

A new car falls in value by 30% in a year. After a year it is worth £8400. Find the price of the car when it was new.

• £15,000

• £12,000

• £10,000

• £9,000

Tags

CCSS.6.RP.A.3C

A holiday is advertised at £760 after it is reduced by 20% in a sale. What was the original price before the sale?

• £800

• £850

• £900

• £950

Tags

CCSS.6.RP.A.3C

In one year the population of an island increased by 5% to 288960 people. Work out the population of the island before the increase.

• 264,800

• 275,200

• 279,100

• 280,300

Tags

CCSS.6.RP.A.3C