Higher November 2021 Paper 3 Q28
28 \(a = 4.72 \quad\) to 3 significant figures.
\(b = 158 \quad\) to 3 significant figures.
Work out the upper bound of \(\dfrac{a}{b}\)
You must show your working. [3 marks]
| Answer | Mark | Comments |
|---|---|---|
| 4.715 or 4.725 or 157.5 or 158.5 | B1 | accept \(4.724\dot{9}\) or 4.7249… accept \(158.4\dot{9}\) or 158.49… |
| their \(4.725 \div\) their 157.5 | M1 | their 4.725 must be (4.72, 4.725] their 157.5 must be [157.5, 158) |
| 0.03 and correct working | A1 | oe eg \(\dfrac{3}{100}\) |
Additional guidance
| Answer 0.03 with no correct working | B0M0A0 |
| 4.7249 exact value with no continuation dots seen | B0 |