A television set was marked for sale at in order to make a profit of 20. The television set was actually sold at a discount of 5Calculate, correct to 2 significant figures, the actual percentage profit.
The Chief Examiner reported that Candidates’performance on this question was poor. Majority of the candidates were reported to exhibit poor manipulative skills on the problem involving fractions. The problem on Commercial arithmetic was also reported to be poorly attempted by majority of the candidates.
In part (a), candidates were expected to cross multiply both sides of the sign of equality to obtain . Multiplying through by the LCM which was 12 gave . Bringing like terms together and simplifying gave.
In part (b) candidates were expected to obtain the cost price of the television set using the formula
Percentage profit . That is, . Solving this equation gave Actual selling price was 95% of 760 ie Therefore actual percentage profit.
in order to make a profit of 20
. The television set was actually sold at a discount of 5
Calculate, correct to 2 significant figures, the actual percentage profit.
. Multiplying through by the LCM which was 12 gave 
. Bringing like terms together and simplifying gave
.
. That is, 
. Solving this equation gave 
Actual selling price was 95% of 760 ie
Therefore actual percentage profit
.