exam
Maths Puzzle
Numerical Ability
How many kilograms of antifreeze must be added to 10 kg. of 20% antifreeze solution to produce a 50% solution?
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exam Other Question
A company buysa copier for $10,000. The value of the copier is $10,000(1-n/20) after n years. After how many years will the value of the copier be $6,500?
On Jan. 2, 2003 Mary bought 10 bonds maturing in 2010 and paying 5% interest. She paid $95 for each bond, for a total of $950. She also bought 10 bonds maturing in 2020 paying 6%