Respuesta :

CrystalQueen

Answer:

? = 61.5%

Explanation:

To find the percent abundance of 4d nails, you need to use the following equation:

Percent Abundance = (number of nails / total nails) x 100%

Percent Abundance (4d) = (123 / 123 + 77) x 100%

                                          =  (123 / 200) x 100%

                                          = 0.615 x 100%

                                          =  61.5%