Foundation January 2019 Paper 1R Q15
15 The diagram shows Jonah’s fish tank.
Diagram NOT accurately drawn
The fish tank is in the shape of a cuboid.
Jonah wants to keep 20 fish in the fish tank.
He knows that he must have 9 litres of water for each fish in the fish tank.
What is the minimum depth of water in the fish tank that Jonah must have?
(4)
| Scheme | Marks |
|---|---|
| 45 × 80 × \(h\) or 3600\(h\) or 45 × 80 (= 3600) | M1 |
| 9 × 1000 × 20 (= 180 000) | M1 |
| “180 000” ÷ (45 × 80) | M1 |
| 50 | A1 |
| (4) | |
| (4 marks) |