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The ratio of gyroids to fossils is 1:3. There are 252 fossils now. Predictions have been made that this number will increase to 345. What would be the expected increase in numbers for gyroids once the fossils are there, assuming the ratio stays the same?

 Mar 4, 2020
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gyroids represent   1 out of  1+3 = 4     or  1/4 of the total

 

345 - 252 = the increase             1/4 of this increase will be the gyroid increase....

 Mar 4, 2020

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