book Maths Puzzle Numerical Ability

the chocolate factory Blends it double-dark-chocolate fudge, which is 35% fat, with its peanut butter fudge, which is 25% fat, to obtain double-dark -peanut fudge, which is 29%fat.

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book Other Question

when can you measure inside the triangle to determine the height? how long would it take me to travel 43miles at a speed of 30mph?