exam Maths Puzzle Numerical Ability

x-y=10,(5,-5)

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exam Other Question

Factor out completely
27x^3-8y^3 46. A principal of $5000 was invested in a savings account for 4 years. If the interest earned for the period was $400, what was the interest rate?
A) 1%
B) 1.5%
C) 2%
D) 2.5%
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