Rate, time, distance

Distance is speed times time, and the same triangle rearranges to give speed or time. The usual difficulty is not the formula but keeping units consistent and handling two travellers whose journeys start at different moments.

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Work through it

LearnWhat it is, how to spot it, a worked example, and where it goes wrong.
Practice — 3-point ladder1 problem. Three in a row finishes it.0/3 in a row · 0/1 solved
Practice — 4-point ladder5 problems. Three in a row finishes it.0/3 in a row · 0/5 solved
Practice — 5-point ladderNo problems written at this tier yet.Nothing written at this tier yet
Skill quizFinish every ladder that has problems first.Finish the ladders above first

Before and after

Needs first

MOD-01Translating a sentence into an equation NUM-11Ratio as parts of a whole

Opens up

MOD-04Combined work rates

In official papers

No indexed official paper question has been tagged with MOD-03 yet. The index grows one paper at a time, and it records only question numbers, point values and our own skill tags — never the problems themselves.

See the papers indexed so far

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