About This Set
This set is a step up, closer to Tier 2. Most questions need two steps or a careful setup: the interest for one particular year, rates that change partway, three instalments or a sum split three ways. Under CI, write the amount at the end of each year when the rate changes; only under SI can you simply add rate × years. Questions marked [Tier 2] are mainly Tier 2 material, so if Tier 1 is your only paper you can come back to them later. Allow about 35 minutes and finish the set before reading the explanations. 18 or more right means you can move on to the PYQ sets.