The following data were collected.
| Substance | Mass in \( g \pm 0.01 \, g \) | Percent Composition |
|—|—|—|
| Mixture before separation | 5.62 | N/A |
| Iron after separation | 2.17 | |
| Sand after separation | 1.98 | |
| Salt after separation | 1.80 | 32.0% |
Calculate the percent composition of the iron and sand in the mixture.