Brain Storm Puz­zle

Active Kids - - Kids‛ Story -

You have two slow-burn­ing fuses, each of which will burn up in ex­actly one hour. They are not nec­es­sar­ily of the same length and width as each other, nor even nec­es­sar­ily of uni­form width, so you can't mea­sure a half hour by not­ing when one fuse is half burned. Us­ing th­ese two fuses, how can you mea­sure 45 min­utes?

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