exam
Maths Puzzle
Numerical Ability
A metal alloy is 25% copper. Another metal alloy is 50% copper. How much of each alloy should be mixed to create 1000 grams of an alloy that is 45% copper?
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exam Other Question
find an equation of the line satisfying the given conditions.
parallel to the line 2x+y=3 and through (-2,3)
For this type of excercise what is the procedure?
(3x+1)(5-10x)>0