About This Set
These 25 questions are at Tier 1 level and use SSC's wording. Its wrong options are what the usual mistakes give you: adding times instead of rates, splitting wages by days instead of work done, or keeping a pipe running after it was closed. Expect one person's time from a pair's, people leaving or joining partway, men-days with hours and length, mixed groups, alternate days, wages and leaks. Give yourself about 25 minutes; with 20 or more right, move on to Practice Set 3.