tag:blogger.com,1999:blog-3802979373213475425.post8307888840196020009..comments2019-04-20T15:33:02.879+05:30Comments on Critical Thinking Puzzles: Grandpa's Age PuzzleUnknownnoreply@blogger.comBlogger2125tag:blogger.com,1999:blog-3802979373213475425.post-70150768334910093922015-01-18T07:23:30.756+05:302015-01-18T07:23:30.756+05:30I've spent hours on this, an evening and the b...I've spent hours on this, an evening and the best part of a morning.<br /><br />Actually, some of the possibilities eliminate themselves because they're negative or fractions. That left me with 4 quadratic equations but none of them gave rational solutions. Obviously, I've made a mistake but I wasn't able to find it.<br /><br />Regards, PaulPaul P. Mealinghttps://www.blogger.com/profile/14573615711151742992noreply@blogger.comtag:blogger.com,1999:blog-3802979373213475425.post-16863834487158657242015-01-18T06:23:35.960+05:302015-01-18T06:23:35.960+05:30I admit this one has stumped me. One has to solve ...I admit this one has stumped me. One has to solve a quadratic equation with rather large numbers and there are a number of possibilities therefore a number of quadratic equations (at least 8, more like 16). I gave up after trying the 2 most obvious contenders.<br /><br />Regards, Paul.Paul P. Mealinghttps://www.blogger.com/profile/14573615711151742992noreply@blogger.com