sums will set you freehow to teach your child numbers arithmetic mathematicsquadratic equations, model answers 





This page is not part of the set of pages on how to teach basic sums/maths/reasoning. This page compares changes in GCE/GCSE exam papers between 1970 and 2010. (GCE/GCSE exams are taken in the UK, normally taken at age 16.) Of course, this page can be used for the study of exam questions of this type. GCE Mathematics question, 1970The following model answers are taken from G.C.E. Model Answers for ‘O’ Level Mathematics, published by Artemis Press, 9th edition 1973. The questions taken from papers for Syllabus D of the University of London G.C.E. examination.
Section XI : Solution of Quadratic Equations Question 1: (January 1969, No. 3ii, oblig.) Solve the equations
Question 2: (Summer 1971, Paper II, No. 2, oblig.) Solve the equation x2 + 3x  1 = 0, giving the roots correct to two decimal places.
Question 3: (Summer 1971, Paper III, No. 10, opt.) A travel agency chartered a plane for £1200 to fly a party of people abroad, it being agreed that each member of the party should pay an equal share of the cost. It was later discovered that 4 members of the party would be unable to travel. The agency calculated that if it contributed £30, the fare of each of the remaining passengers would have to be increased by £5 in order to Cover the cost of £1200. If N represents the original number of people in the party (a) write down an expression for the number of pounds each passenger would have paid originally, (b) form an equation in N and solve it. Hence calculate the amount each passenger finally paid. Answer:
(b) Equating the loss of four fares to the sum needed to make good the loss,



Question 4: (January 1971, No. 10, opt.) A motorist makes a journey of 1080 miles using petrol brand A at an average rate of x miles per gallon. He changes to a cheaper petrol, brand B, with which his car travels 3 miles less per gallon, and uses 4 gallons more for the same journey. Form an equation for x and solve it to find the number of miles per gallon with brand A. Given that brand A costs 35p per gallon and that brand B costs 32tp per gallon, calculate the difference in cost of the two journeys. Answer:
1080x  3 x 1080 + 4x ( x  3) = 1080x,
As x must be positive, x = 30 miles per gallon. Ans. Cost of first journey = GCSE Mathematics question, 2010
end notes

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moneybookers information  egold information  fiat money and inflation  
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