var killers = new Array( "A 90-minute video tape is used for a programme of 55 minutes' duration. How much time is left on the tape? $$45 minutes%%25 minutes^^35 minutes&&55 minutes.", "A box contains 8000 microchips. Each microchip weighs 0.2 g. What is the total weight of the microchips?$$1400 g%%1200 g^^1800 g&&1600 g", "A 200 kg bag of powder is to be divided into sachets containing 0.05 g. How many sachets will there be?$$4000 sachets%%2000 sachets^^3000 sachets&&1000 sachets", "A bottle of oil contains 0.8 litres. How many litres will there be in 50 bottles?$$35 litres%%30 litres^^20 litres&&40 litres", "How many 20p coins can you get in exchange for £70?$$350%%320^^330&&340", "A telephone bill is made up of:
(a) a call charge of 110 units at 5.5p per unit
(b) a rental line charge of £25.80.
What is the total bill?$$£ 31.85%%£ 32.15^^£ 31.95&&£ 32.05", "What is the square of 7?$$47%%43^^45&&49", "What is the square of 6?$$34%%38^^36&&32", "What is the square of 12?$$142%%146^^140&&144", "What is the square of 13?$$169%%165^^167&&163", "What is the square of 20?$$600%%400^^1000&&200", "What is the square of 41?$$1683%%1679^^1681&&1689", "What is the cube of 7?$$341%%339^^345&&343", "What is the cube of 6?$$218%%220^^214&&216", "What is the cube of 12?$$1724%%1728^^1722&&1726", "What is the cube of 13?$$2193%%2191^^2197&&2195", "What is the cube of 20?$$10000%%6000^^8000&&4000", "What is the cube of 41?$$68921%%68917^^68923&&68919", "What is the square root of 121?$$± 13%%± 12^^± 15&& ± 11", "What is the square root of 169?$$± 17%%± 13^^± 15&& ± 19", "What is the square root of 49?$$± 3%%± 7^^± 5&& ± 9", "What is the square root of 3?$$± 1.735 (to 3 d.p.)%%± 1.732 (to 3 d.p.)^^± 1.738 (to 3 d.p.)&& ± 1.736 (to 3 d.p.)", "What is the square root of 70?$$± 8.35 (to 2 d.p.)%%± 8.39 (to 2 d.p.)^^± 8.37 (to 2 d.p.)&& ± 8.34 (to 2 d.p.)", "Lawrence saves some images onto his floppy disk. Each image requires 35 000 bytes of memory. How many whole images can he save if the floppy disk has a memory equivalent to 1.2 x 106 bytes? $$32 complete images%%34 complete images^^33 complete images&&35 complete images", "How many minutes are there in 2/3 of 2 hours?$$80 minutes%%60 minutes^^50 minutes&&70 minutes", "A train carried 273 passengers; of these 2/7 travelled first class. How many passengers travelled first class?$$78%%76^^79&&77", "A pop concert has an audience of 8 496 people. Two thirds of the people at the concert pay a £15 entrance fee while the remainder pay a reduced rate of £7. What is the income from the concert to the nearest thousand pounds?$$£105 000%%£80 000^^£104 800&&£82 000", "4.32 and 5.47 have both been rounded to 2 decimal places. What is the reliable answer to 4.32 x 5.47?$$23.6304%%23.6^^23.63&&23.630", "5420 and 5.47 have both been rounded to 3 significant figures. Give an accurate answer to 5420 / 5.47.$$973.07%%973.1^^973&&970", "Change the following percentage into a decimal: 17%.$$17.0%%1.7^^0.17&&0.017", "Change the following percentage into a fraction: 17%.$$17/100%%100/17^^17/1000&&1000/17", "Change 3/5 into a percentage.$$55% %%50%^^60%&&65%", "Change 5/8 into a percentage.$$61% %%62.5% or 62 1/2%^^63.5% or 63 1/2%&&64% ", "Change 1/3 into a percentage.$$34% %%33.33% or 33 1/3%^^33%&&33.5% or 33 1/2%", "'Local Government Officers receive a 5 1/2% wage increase.' Carina works for the local council. Her salary is £12800. What will be her new salary?$$13500%%13504^^13503&&13502", "Sale: 30% off all prices. What is the sale price of a coat normally priced at £48?$$33.75%%33.70^^33.60&&33.65", "The HP(Hire purchase) terms on the TV set are a 15% deposit, and 36 monthly payments of £12.70. The cash price for the TV is £ 380. Find the total cost of the HP agreement.$$£ 514%%£ 514.10^^£ 514.15&&£ 514.20", "The HP(Hire purchase) terms on the TV set are a 15% deposit, and 36 monthly payments of £12.70. The cash price for the TV is £ 380. Find the amount saved if the TV is bought for cash.$$£ 134%%£ 134.20^^£ 134.15&&£ 134.10", "What is the true length of distances depicted by the following length and scale:
3cm on a scale of 1:44?$$132cm (=1.32m)%%130cm (=1.30m)^^133cm (=1.33m)&&131cm (=1.31m)", "What is the true length of distances depicted by the following length and scale:
5cm on a scale of 1:72?$$365cm (=3.65m)%%370cm (=3.7m)^^375cm (=3.75m)&&360cm (=3.6m)", "What is the true length of distances depicted by the following length and scale:
12.5cm on a scale of 2cm to 1 km?$$6.25km%%6.5km^^6.0km&&6.05km", "What is the true length of distances depicted by the following length and scale:
12mm on a scale of 1:600?$$7100mm (=7.1m)%%7200mm (=7.2m)^^7300mm (=7.3m)&&7400mm (=7.4m)", "What is the true length of distances depicted by the following length and scale:
1.2m on a scale of 1:7?$$8.4m%%8.2m^^8.0m&&8.7m", "An architect is making a scale model of a new house from a drawing. One of the dimensions on the drawing shows that the height of the real house is 12.5 metres. What scale does the architect need to work to, if the height of the model house has to be 2.5 centimetres?$$1 : 50%%1 : 500^^1 : 100&&1 : 5", "A car travels for 300 kilometres on 35 litres of petrol. How far will it travel on 54 litres?$$462.9 (to 1 d.p.)%%462.8 (to 1 d.p.)^^462.7 (to 1 d.p.)&&462.6 (to 1 d.p.)", "A car travels for 300 kilometres on 35 litres of petrol. How much petrol would be needed for a journey of 369 kilometres? $$41.05 litres%%42.05 litres^^43.05 litres&&44.05 litres", "If 56 items cost £ 120 pounds, how many can I get for £ 84? $$39.2 (or 39 if the items must be sold whole)%%38.2 (or 38 if the items must be sold whole)^^37.2 (or 37 if the items must be sold whole)&&36.2 (or 36 if the items must be sold whole)", "If a machine produces 34 items in 5 minutes, how many will it produce in 34 minutes?$$233.2%%234.2^^232.2&&231.2", "4 workers build a wall in 12 days. How long would it take 7 workers ?$$6.6 (to 1 d.p.)%%6.7 (to 1 d.p.)^^6.9 (to 1 d.p.)&&6.8 (to 1 d.p.)", "20 workers produce 3 000 articles in 15 days. How long would it take 13 workers?$$23 (to nearest no. of whole days)%%24 (to nearest no. of whole days)^^25 (to nearest no. of whole days)&&26 (to nearest no. of whole days)", "Here are the scores that 20 people get for a test:
8, 7, 5, 6, 9
4, 5, 7, 2, 1
6, 1, 9, 2, 1
5, 9, 7, 3, 8
To pass the test a person needs to score 8 or more. What percentage of people fail to pass by 1 mark?$$15% %%25%^^75%&&3%", "The border for the top of the walls costs £3.97 per metre. Which estimate is most accurate for the total cost of the border?$$(8 + 3) x 2 x 4 = £88%%(8 + 3) x 4 = £44^^(8 + 3 + 8 + 3) = £22 &&(8 x 3) x 4 = £96", "3.2 litres of paint are needed to decorate the bedroom. (1 litre = 1 000cm3). The decorator mixes 3 paint colours together. The amounts of paint are in the ratio: 15 parts of Honey Yellow to 12 parts of Aztec Orange to 5 parts of Ravishing Red. How much Ravishing Red will the decorator need?$$1200cm3%%1067cm3^^720cm3&&500cm3", "A Hotel had 15329 guests in 2003. 5748 of the guest used the swimming pool. What is the approximate ratio of those using the pool to those not using the pool?$$3:5%%3:8^^5:8&&5:3" ); var answers = new Array('c','d','a','d','a','a','d','c','d','a','b','c','d','d','b','c','c','a','d','b','b','b','c','b','a','a','a','b','d','c','a','c','b','b','b','c','d','b','a','d','a','b','a','b','a','c','a','d','c','a','a','a','d','a');