exam
Maths Puzzle
Numerical Ability
A 25% SOLUTION OF ALCOHOL IS TO BE MIXED WITH A 40% SOLUTION TO GET 50l OF A FINAL MIXTURE THAT IS 30% alcohol. How much of each of the original solution should be used?
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exam Other Question
multiplying polynomials
r^3(2r^2-5r-1)
What is the formula that I would use to solve this problem. What are all the possible combinations for an answer queue if you have 25 true/false questions? Thanks for all your help