There will be a 25 grams left after 3240 years.
The half-life of Radium-226 is 1620 years. If we divide 3240 by 1620 the answer is 2. So that means the amount of Radium-226 will divide in half twice.
100 / 2 = 50 / 2 = 25
<span>Use the numbers 913, 256 .</span>
The answer is B.
Reason: Think of it this way, the bottom number of all 3 fractions are related to 12. 6*2 4*3 and 3*4..
Answer:

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Answer:
The stores profit is $59.50
Step-by-step explanation: