A bone fragment has 67% of the parent Pb-210 remaining the half-life of Pb-210 is 22 years how old is the bone fragment

50 min

step-by-step explanation:

they will be decreasing both their times in half

60 / 2 = 30

40/2 = 20

30 + 20 = 50

the answer is $42.96

step-by-step explanation:

believe it or not anna is correct good job anna give me a fist bump there u go gal

the answer is d

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