Answer:
Percentage = 35%
Step-by-step explanation:
Given the following data;
Mass of iron, I = 2.090 x 10^24 kg
Mass of Earth, E = 5.972 x 10^24 kg
To find the percentage mass of iron on Earth;
[tex] Percentage = \frac {I}{E} * 100 [/tex]
Substituting into the formula, we have;
[tex] Percentage = \frac {2.090 * 10^{24}}{5.972 * 10^{24}} * 100 [/tex]
[tex] Percentage = 0.350 * 100 [/tex]
Percentage = 35%