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Maths Puzzle
Numerical Ability
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16y=64
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The questions is:
There are 700 students that watch TV. 45% are men. If the confidence interval is 95% what is the true proportion of men that watch tv.
What is the correct formula?
Brazilian coffee sells for $4 a pound. Columbian coffee sells for $9 a pound. How much of each kind should be used to make twenty pounds of a blend of the two that sells for $5 a p