exam Maths Puzzle Numerical Ability

Factor the polynomial.

81 a 8 b 8 c 6 - 16 d 8

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exam Other Question

Solve:

x=0.25[200,000-0.10(200,000-x)] If you bought 850 Douglas firs and ponderosa pines and paid an average of $300 for douglas firs and $225 for ponderosa pines and the total you spent was $217,500 how many of each tree did you buy?