Final answer:
To find 15% of Amelia's number, multiply the number by 0.15.
Step-by-step explanation:
To find 15% of Amelia's number, you need to first determine what number Amelia is thinking of. The information provided states that 10% of Amelia's number is 46. From this, you can determine that her number is 460. To find 15% of 460, you can use the formula: 460 x 0.15 = 69. Therefore, 15% of Amelia's number is 69.