book Maths Puzzle Numerical Ability

If it takes me 4 hours to paint a huse and it take you 6 hours, how long willit take both of us working together?

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book Other Question

how and why does the power law work? 4) For a fixed rate, a fixed principal amount, and a fixed compounding cycle, the return is an exponential function of time. Using the formula,A = P(1+(r/n)^nt)) , let r = 8%, P =