exam Maths Puzzle Numerical Ability

solve by using the quadratics formula
15nSQUARED-3=4n

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exam Other Question

Write the equation of the line L satisfying the given geometric conditions.
L has y-intercept (0,2) and is perpendicular to the line with equation
2x - 3y = 6 If a clock loses 2 minutes every 15 hours how much times does it lose after 2 hours? Need help on how to solve. Answer is 4/15