1MA0 Foundation June 2012 Paper 1 Q19
19
A pack of 9 toilet rolls costs £4.23
A pack of 4 toilet rolls costs £1.96
Which pack gives the better value for money?
You must show all your working. (3)
| Working | Answer | Mark | Notes |
|---|---|---|---|
| \(1.96 \times 2.25 = 4.41\) OR \(4.23 \div 9 = 0.47\) \(1.96 \div 4 = 0.49\) OR \(4.23 \times 4 = 16.92\) \(1.96 \times 9 = 17.64\) OR \(4.23 \div 9 = 0.47\) \(0.47 \times 4 = 1.88\) OR \(1.96 \div 4 = 0.49\) \(0.49 \times 9 = 4.41\) OR \(9 \div 4.23 = 2.12\) \(4 \div 1.96 = 2.04\) | Pack of 9 | 3 | M2 for a fully correct method to enable a conclusion eg \(1.96 \times 2\frac{1}{4}\) OR M1 for \(4.23 \div 9\) or \(423 \div 9\) or 0.47 seen or 47 seen M1 for \(1.96 \div 4\) or \(196 \div 4\) or 0.49 seen or 49 seen OR M1 for \(4.23 \times 4\) or \(423 \times 4\) or 16.92 seen or 1692 seen M1 for \(1.96 \times 9\) or \(196 \times 9\) or 17.64 seen or 1764 seen OR M1 for \(4.23 \div 9\) or \(423 \div 9\) or 0.47 seen or 47 seen M1 for \(0.47 \times 4\) or \(47 \times 4\) or 1.88 seen or 188 seen OR M1 for \(1.96 \div 4\) or \(196 \div 4\) or 0.49 seen or 49 seen M1 for \(0.49 \times 9\) or \(49 \times 9\) or 4.41 seen or 441 seen OR M1 for \(9 \div 4.23\) or 2.12(...) seen or 2.13 seen M1 for \(4 \div 1.96\) or 2.04(...) seen A1 for Pack of 9 and fully correct calculations NOTE: B0 for an answer of 9 not supported by working. |