book Maths Puzzle Numerical Ability

If 64 feet of rope weighs 20 pounds, how much will 80 feet of the same rope weights?

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book Other Question

Find the equation of the line passing through the points (-3,8) and (-4,-5)

A) y=13x-47
B) y=13x+47
C) y=13x-31
D) y= -13x-31 Use the binomial theorum to find the fifth term in the expansion (2x+3y)^5.

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