Foundation June 2019 Paper 1R Q13
13 Potatoes cost 2 dollars per kg.
Carrots cost 3 dollars per kg.
Alfred buys \(p\) kg of potatoes and \(c\) kg of carrots.
The total cost is \(T\) dollars.
Write down a formula for \(T\) in terms of \(p\) and \(c\).
(3)
| Scheme | Marks |
|---|---|
| \(T = 2p + 3c\) | B3 |
| (3) | |
| (3 marks) |
Notes
B3: [award B2 if \(T = 2p + 3c\) is incorrectly simplified]
(condone \(T = 2 \times p + 3 \times c\))
(B2) for \(T = 2p + kc\) or \(T = kp + 3c\) (\(k\) may be zero) or \(2p + 3c\)
(B1) for \(2p\) or \(3c\) or \(T\) = a linear expression in \(p\) and \(c\) e.g. \(T = p + c\)