exam
Maths Puzzle
Numerical Ability
An alloy of tin is 16% tin. How much tin must be added to make 820 lbs of alloy that is 18% tin? Answer to the nearest tenth.
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exam Other Question
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?
Solve the equation by expressing each side as a power of the same base and then equating exponents
e^(x+5)=1/e^6