•The 14C activity of some ancient Peruvian corn was found to be 10 disintegrations per minute per gram of C. If present-day plant life shows 15 dpm/g, how old is the Peruvian corn? The halflife of 14C is 5730 years.
"15=10\\cdot 2^{\\frac{t}{5730}}"
"t=3350\\ years"
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