Higher June 2018 Paper 1R Q13
13 Each month Edna spends all her income on rent, on travel and on other living expenses.
She spends \(\dfrac{1}{3}\) of her income on rent.
She spends \(\dfrac{1}{5}\) of her income on travel.
She spends \(\$\)420 of her income on other living expenses.
Work out her income each month.
(4)
| Scheme | Marks |
|---|---|
| \(\dfrac{1}{3} + \dfrac{1}{5} \left(= \dfrac{8}{15}\right)\) or 0.53... or 53.3.....% or 53% | M1 |
| \(1 - \text{``}{\dfrac{8}{15}}\text{''} \left(= \dfrac{7}{15}\right)\) or 0.46..... or 0.47 or 46.6...% or 47% | M1 |
| \(420 \div \text{``}{\dfrac{7}{15}}\text{''}\) (= 900) oe | M1 |
| 900 | A1 |
| (4) | |
| (4 marks) |