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Please help me with my math

Mathematics
Tutor: None Selected Time limit: 0 Hours

Apr 7th, 2015

He completes puzzles at a rate of 4/15 puzzles per minute

In one hour and 45 minutes there are 105 minutues

So, (4/15)(105) = 28 puzzles

Apr 7th, 2015

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Apr 7th, 2015
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Apr 7th, 2015
Dec 3rd, 2016
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