Higher June 2025 Paper 2R Q8
8 The mean of 7 numbers is 60
The mean of 3 of the numbers is 46
Work out the mean of the other 4 numbers.
(3)
| Scheme | Marks |
|---|---|
| 60 × 7 (= 420) or 46 × 3 (= 138) | M1 |
| “420” – “138” (= 282) | M1 |
| Correct answer scores full marks (unless from obvious incorrect working) Answer: 70.5 | A1 |
| (3) | |
| (3 marks) |
Notes
M1: may be embedded within an equation
M1: for a method to find the sum of the 4 numbers
Allow this mark if they do further incorrect work using 282
A1: allow \(\dfrac{141}{2}\) oe eg \(\dfrac{282}{4}\) or \(70\dfrac{1}{2}\)