O-LevelMathematicsNumber4024/12 · Oct/Nov 2016 · Q193 Marks
A box has a mass of 1.7kg, correct to the nearest 0.1 kg.
- (a)Write down the lower bound for the mass of the box.[1]
- (b)The box holds 100 jars. Each jar has a mass of 140 grams, correct to the nearest 10 grams. Calculate the lower bound of the total mass of the box and 100 jars. Give your answer in kilograms.[2]
Mark scheme
Marking points from the official mark scheme (Oct/Nov 2016). The mark or mark type is shown in brackets.
- [1] (a) 1.65
- [2*] (b) 15.15
- M1 for their(a) + 100 × 135/1000 or B1 for 13.5 seen.
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