book Maths Puzzle Numerical Ability

how and why does the power law work?

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book Other Question

Leon drove 270 miles to the lodge in the same time as Pat drove 330 miles to the lodge. If Pat drove 10 miles per hour faster than Leon, then how fast did each of them drive?

So 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?