exam
Maths Puzzle
Numerical Ability
How much 40% acid solution should be mixed with 2 gallons of 60% acid solution in order to get 50% acid solution? Set up an equation to solve.
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exam Other Question
Solve. 4^2=x^2+a+1t
1. Use properties of the logarithms to expand:
log(base 2) (x - 5) / (x^3)
2. Use properties of the logarithms to expand:
ln 2x / Square root x^2 - 1
3. Express as a singl