Brain teaser....help

krappyrubsnif

I can't do mental arithmetic any longer. Here is a brain twister - help!. I am a very slow runner. At the gym today I ran five km at a steady 7.5 kph and of course it took me exactly 40 minutes. I want to gradually increase my speed, so tomorrow I will do the same distance at a steady 7.6 kph (and then work up daily from there). How long will tomorrow's run take me? Can't do it. Who can tell me? :-)

kreuzkav

40 minutes and 32 seconds.

krappyrubsnif

No Kreu, it cannot possibly take *longer*. On the other hand..... By the way, did you know that on autocorrect your name comes out as Kreme kat? Just saying.

kreuzkav

Sorry, the other way round 39 minutes 28 seconds.  <div><br></div><div>Kreme Kat is cool.  It's cool for Kats.</div>

krappyrubsnif

Kreme Kat - I now have the answer confirmed and you are correct.    I officially crown you SGO Brain of Stroud Green 2014.

JoeV

I'll give it a go<div><br></div><div>Time = Distance/Rate</div><div><br></div><div>5km/7.5kph = .6666 hours or 40 minutes (.6666*60) (that's about a 13-minute mile)</div><div><br></div><div>5km/7.6kph = .6578 hours or 39.47 minutes (.6578*60)</div><div><br></div><div>5km/8.0kph = .625 hours or 37.5 minutes (.625*60) (that would be about a 12-minute mile)</div>

krappyrubsnif

Sorry. 2015. (I am officially village idiot..)