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Do all these combinations cost $ £5$ per kg? How do you find out?
Do any of these combinations give identical mixes? How do you find out?
Are there any relationships between the quantities of the different ingredients?
If it takes four men one day to build a wall, how long does it take 60,000 men to build a similar wall?
Which is a better fit, a square peg in a round hole or a round peg in a square hole?
If the sides of the triangle in the diagram are 3, 4 and 5, what is the area of the shaded square?