exam Maths Puzzle Numerical Ability

please help: Placing planks of equal length end to end, jules found that 3 planks were one foot short of the porch length, while 4 planks were two feet too long. How long was each planks?

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exam Other Question
How many solutions are there to the system
x - 4y = 2
x-4y = 7 Solve each equation

Alice is making casserole snacks. Each snack will be 2 inches by 4 inches. How many snacks will she have if she bakes 4 batches, each in 12-inch by 16-inch baking pan?






Thanks so much