exam Maths Puzzle Numerical Ability

Express the following rational expressions in lowest terms:

y^2-y-12
_

y^2-9

3x^2-6x-72
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2x^2-8x-64

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exam Other Question

|x|+3=11

|x|< 5.5

-3 |(-4)(5)| Carol has received a loan of 50000pesos. She has invested part of it at 10% annual interest and the remaining amount at 14%. If she receives 6400pesos at the end of one year, how much has she invested at each rate?