Foundation November 2022 Paper 2 Q16
16 Water flows through each of the pipes that fill a lake at the same rate.
It takes 4 of the pipes 12 hours to fill the lake.
Work out how many hours it would take 6 pipes to fill \(\dfrac{1}{4}\) of the lake. (3)
| Answer | Mark | Mark scheme |
|---|---|---|
| 2 | P1 | for a calculation from within the list \(4 \times 12 \div 4 \div 6\) eg \(4 \times 12\ (= 48)\) or \(12 \div 4\ (= 3)\) or \(6 \div 4\ (=1.5)\) or \(4 \div 6\ (= 0.66..)\) |
| P1 | for a complete process, eg \((\text{``}48\text{''} \div 6) \div 4\) or for \(\text{``}0.\dot{6}\text{''} \times 12 \div 4\) | |
| A1 | cao |
Additional guidance
Accept \(12 \div 6\) as a full process