(main)[2]
Find her score on the fifth test.
Mathematics 0580 · IGCSE · Averages and measures of spread
Averages and measures of spread — practice question
Amber’s mean score over five tests is 80. Her results in four of those tests are 68, 81, 74 and 89.
Worked solution & mark scheme
This 2-mark question has a full step-by-step worked solution and mark scheme. One marking point: “$\frac{68+81+74+89+x}{5}=80$ together with solving for $x$” …
- Full mark scheme, point by point
- Step-by-step worked solution
- Write your answer & get it marked instantly by AI