book Maths Puzzle Numerical Ability

find the actual width of the doorway into the kitchen and the dining room if the scale is 2:24 and on the drawing the doorway is 1/4 of an inch.

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Divide

2x^3 -3x^2 -3x +6 Divided by X - 1 a scale model of a while is being built. the actual length of the whale is 65 feet. the scale of the model is 2 inches: 3 feet. what will be the length of the model ?