exam Maths Puzzle Numerical Ability

solve 9/(x-3) = 8/(x+5) this is easy i know, and i am thinking too hard.

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exam Other Question

is the sqrt of 77 rational or irrational? 5) Suppose that the function P=11+44ln x represents the percentage of inbound e-mail in the U.S. that is considered spam, where x is the number of years after 2002.

Carry all c