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Your class has been asked to raise money for charity, so you decide to sell small cakes at break. Each person is going to make as many cakes as they can. However, the recipe you have is for a tray bake which will cut up into 12 cakes - some people say they can't do that many, others want to do a lot more.
Then you have to decide how much you will charge for the cakes. Clearly you need to cover the cost of ingredients, and you want to make a decent profit for the charity.
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?