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Maths Puzzle
Numerical Ability
A conical pile of sand 6ft high has a base of 27 sq. ft. How many loads of sand are there in the pile(1load=1 cu. yard)
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The cost in dollars of manufacturing w wing nuts is given by the expression 0.07w + 13.3. Find the cost when 375 wing nuts are made. What is the average cost to manufacture one wing nut?
x2 + 8x +14 =0