exam
Maths Puzzle
Numerical Ability
if you were to leave a 15% tip for a meal at a restaurant where the total bill came to $13.80, how much would the tip amount to?
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exam Other Question
The combined resistance of two resistors r1 and r2 in a parallel circuit is given by the formula:
Rt = 1
-------
1 1
--- + ---
R1 R2
Thank you for the help
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7x - 2 + 3x - 9