exam
Maths Puzzle
Numerical Ability
Solution K is 30% alcohol and solution W is 50%. How much of each should be used to make 300 l of a 40% solution?
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exam Other Question
what are the non-permssible values for the rational expression x^2+2x+5/x(x-4)
a. x=1 and x=3
b. x=2 and x=-3
c. x=2 and x=-2
d. x=0 and x= 4
4 2nd power + 2 x 7 – (5 x 4 – 15)