This mathematics problem involves applying core mathematical principles and formulas. Below you will find a complete step-by-step solution with detailed explanations for each step, helping you understand not just the answer but the method behind it.
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You're on a roll — here are the solutions to the quiz questions: Question 18: m) Find the mass, in kilograms, of cement needed to make the slab. Step 1: Determine the overall ratio of Ballast : Sand : Cement. Given ratios: Sand : Cement = 9 : 5 Ballast : Sand = 2 : 1 To combine these, make the 'sand' part consistent. Multiply the Ballast : Sand ratio by 9: Ballast : Sand = (2 × 9) : (1 × 9) = 18 : 9 So, the combined ratio is Ballast : Sand : Cement = 18 : 9 : 5. Step