exam Maths Puzzle Numerical Ability

4 over 5a times 3 over 2a^2

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exam Other Question

Solve by factoring.
x^2 + 2x - 48 = 0
Jim borrowed some money at 13% interest and some money at 16% interest. The amount at 16% was $200 more than twice the amount borrowed at 13%. How much was borrowed at each rate if he had to pay a total of $234.50 annual interest?