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Kong took 15 percent fewer seconds than Nolan took to complete his multiplication timed test. Kong took 85 seconds. How many seconds did Nolan take?

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Pecotrain
To solve this question, you must make 15 a percent, and then multiply that by 85. So first, you would take 15, move the decimal back twice and get .15. Now multiple that times 85. The correct answer is 12.75 seconds.
zoceanbeach

I think 100 seconds for my own reasons

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