Unit 6 · Algebra
Sweetcorn Can Puzzle — Find the Three-Quarters-Full Weight
Lesson 24 of 24
About this lesson
Two scenarios give you two equations: C + S/2 = 120 and C + S/4 = 65. Subtract to get S/4 = 55, so full sweetcorn = 220 g and the can = 10 g. Three-quarters full = 10 + 165 = 175 g.
Chapters
Question
When this can of sweetcorn is half full the sweetcorn and can together have a mass of 120 grams.
When the can of sweetcorn is one-quarter full the sweetcorn and can together have a mass of 65 g.
What is the mass of the can and sweetcorn together when the can is three-quarters full?
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