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Maths Puzzle
Numerical Ability
If you borrow $100 and pay back $105 at the end of one month, then what is the simple annual interest rate?
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Please help! I don't know how to set-up this problem.
A rock is dropped into a well, and 3 seconds later the sound of its splash is heard. How deep is the well? Assume that soun
equation problem: please help...
y + 5 = 0
9
(y over 9 + 5= 0)