Answer:
45% of the beads are round and 55% of the beads are rectangular.
Explanation:
The percentage of beads that are round can be found by dividing the number of round beads by the total number of beads and then multiplying by 100:
Percentage of round beads = $\frac{45}{100} \times 100% = 45%$
To find the number of rectangular beads, we can subtract the number of round beads from the total number of beads:
Number of rectangular beads = 100 - 45 = 55
Therefore, 45% of the beads are round and 55% of the beads are rectangular.