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Maths Puzzle
Numerical Ability
A principal earns interest of $196 in 3 years and 6 months at a simple interest rate of 6 1/2%.Find the principal invested?
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iF x varies inversely as y^2 and x=3 when y=24, find x when y=6
I have been working on this all day. could someone explain this problem to me i am working with adding and subtracting rational expressions with different denominators.
4x/2x^2 + x - 10 - 9x/x^2 + x - 6