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 General Mathematics Paper 2,Nov/Dec. 2013
 Questions: 1 2 3 4 5 6 7 8 9 10 11 12 13 Main
Weakness/Remedies
Strength

Question 4

Question 4

1.     Solve: 7x + 4 < (4x + 3) and illustrate your answer on a number line.
2.     The sum of three numbers is 81.  The second number is twice the first     and the third number is six more than the second.  Find the numbers.
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Observation

This question was reported to be attempted by majority of the candidates and they performed well in it.

In part(a) candidates were reported to have opened the brackets to have      (4 + 3) = 2 +   Therefore 7 + 4 < ½(4+3) became 7 + 4 < 2 + .  Bringing like terms together and solving gave x < - .  This was represented on the number line as

-1    -1  -    0

In part(b) candidates were able to show that if  was the first number, then the second was 2 and the third was 2 + 6. From the first statement,  + 2 + 2 + 6 = 81.  Solving this equation gave  = 15.  The other two numbers were 30 and 36 respectively.