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January 26, 2015

January 26, 2015

Posted by **Anonymous** on Thursday, June 17, 2010 at 2:29pm.

- Calculus -
**Reiny**, Thursday, June 17, 2010 at 6:01pmso you want 10% to remain (the 20g is actually not relevant)

solve

.1 = (1/2)^(t/1590)

log .1 = log (.5^(t/1590))

t/1590(log .5) = log .1

t/1590 = log .1/log .5

etc.

let me know if didn't get t = 5282

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