Foundation November 2024 Paper 2 Q24
24 Kim puts 4 bananas in a bag.
The mean weight of the 4 bananas in the bag is 145 grams.
Andy puts one more banana into the bag.
The mean weight of the 5 bananas in the bag is 142 grams.
Work out the weight of the banana that Andy puts into the bag.
(3)
| Scheme | Marks |
|---|---|
4 × 145 (= 580) or 5 × 142 (= 710) or \(\dfrac{145 + 145 + 145 + 145 + x}{5} = 142\) oe | M1 |
| 5 × 142 – 4 × 145 or “710” – “580” or \(145 + 145 + 145 + 145 + x = 5 \times 142\) | M1 |
| Correct answer scores full marks (unless from obvious incorrect working) Answer: 130 | A1 |
| (3) | |
| (3 marks) |
Notes
M1: for one correct product
or
for a correct equation for the weight of the last banana
M1: A fully correct method to find the weight of the 5th banana
or
a fully correct equation to find the missing weight with no denominator