About This Set
These questions are a step up, closer to Tier 2: most need two steps or a careful setup, such as several capital changes in one year, salary and interest taken out before sharing, or a ratio hidden inside fractions and percentages. The three marked [Tier 2] (a surd equation, savings of three people, and a printing cost that is partly fixed) go past the usual Tier 1 level, so leave them for later if you are preparing only for Tier 1. Allow about 35 minutes and do the whole set before reading any explanation. If you get 18 or more right, you are ready for the PYQ sets.