Ratios and Percentages

Allan scores 38 out of 40 in a mathematics test. What percentage is this?

A computer costs £320 plus VAT at 20%. Work out the cost of the computer including the VAT.

Jack buys a box of 20 pens for £3.00. He sells the new pens for 21p each. He sells all the pens. Work out his percentage profit.

• 53.3%

• 33.3%

• 40%

• 12.6%

In a sale all the prices are reduced by 30%. The sale of a jacket is £28. Work out the price of the jacket before the sale.

Toby invites a group of friends to a party, but only 80% of the people invited turn up. 68 people turn up to the party. How many people did Toby invite.

Bill invests some money at a compound interest rate of 3.5% per annum. After 6 years his investment is worth £921.94. How much did Bill invest.

• 803

• 750

• 780

• 749

Work out the compound interest on £450 invested at 3% per annum for 4 years.

• £506.48

• £835.25

• £56.48

• £5.42

Work out the compound interest on £3000 invested at 5.5% per annum for 8 years

• £4604.06

• £1781.54

• £450.50

• £1604.06

On her 16^th birthday, Ann puts £160 in a saving account. The account pays compound interest at 3% per annum. How old will Ann be when her savings have increased to over £200

• 23

• 24

• 20

• 26

Ben bought a car for £12,000. Each year the car depreciated by 10%. Work out the value of the car 2 years after he bought it.

• £9720

• £14520

• £8748

• £9500