6 A farmer increases the output of her farm by 15% A farmer increases the output of her farm by 15%. If the previous output was 6500 tonnes, what is her present output?
7 A shop is having a sale. It sells a set of tools costing $130 at a 15% discount. Calculate the sale price of the tools.
8 $60000 is borrowed with 4% p.a. simple interest. Calculate: a) the total interest after 5 years,b) the total amount paid back after 8 years.
9 An apartment is bought for ₤75 000 and then resold for ₤87 000 An apartment is bought for ₤ and then resold for ₤ Calculate the percentage profit.
10 Shares in a company are bought for $600 Shares in a company are bought for $600. After a year the same shares are sold for $550. Calculate the percentage depreciation.
11 $4500 is invested at 9% p. a. compounded yearly $4500 is invested at 9% p.a. compounded yearly. Work out the total value of the investment after 10 years.
12 A boat is sold for a profit of 28% A boat is sold for a profit of 28%. If the boat is sold for $15360, work out how much it originally cost the seller.
13 In a geography textbook, 35% of the pages are coloured In a geography textbook, 35% of the pages are coloured. If there are 98 coloured pages, how many pages are there in the whole book?
14 A farmer takes 250 chickens to be sold at a market A farmer takes 250 chickens to be sold at a market. In the first hour he sells 8% of his chickens. In the second hour he sells 10% of those that are left.a) How many chickens has he sold in total?b) What percentage of the original number did he manage to sell in two hours?
15 The population of a town increases by 5% each year The population of a town increases by 5% each year. If in 2007 the population was , in which year is the population expected to exceed for the first time?
16 In a test Valeria H scored 88% In a test Valeria H scored 88%. If she got 3 questions wrong, how many did she get correct?
17 A one year old car is worth ₤11 250 A one year old car is worth ₤ If its value had depreciated by 25% in that first year, calculate what its price was when new.
18 A company increased its productivity by 10% each year for the past two years. If it produced units this year, how many units did it produce two years ago?
19 Answers1. 2∕25m%tonnes6. $110.507. a) $12000b) $792008. 16%%10. $11. $1200013. a) 43b) 17.2%16. ₤15000