Foundation January 2019 Paper 2 Q9
9 Sahil has a fish tank in the shape of a cuboid, as shown in the diagram.
Diagram NOT accurately drawn
The tank is
55 cm long
28 cm wide
33 cm high
The surface of the water in the tank is 3 cm below the top of the tank.
Sahil is going to put some neon tetra fish in his tank.
He must allow 4 litres of water for each of the neon tetra fish he puts in the tank.
What is the greatest number of neon tetra fish Sahil can put in his tank?
(4)
| Scheme | Marks |
|---|---|
| 55 × 28 × (33 – 3) oe (= 46 200) or 55 × 28 × 33 (= 50820) | M1 |
| “46 200” ÷ 1000 ÷ 4 “50820” ÷ 1000 ÷ 4 “46 200” ÷ (4 × 1000) “50820” ÷ (4 × 1000) | M2 |
| 11 | A1 |
| (4) | |
| (4 marks) |
Notes
M1: correct method to find the volume of water in fish tank or volume of fish tank
M2: For ÷ 1000 ÷ 4 (or ÷ by 4000) or for an answer of 11.55
(M1 for division of volume by one of these or for 4 × 1000 (= 4000))
A1: cao