Stamps in an album can be arranged as 12 per page or 18 per page exact...
To find the greatest number of stamps that can be arranged in an album with either 12 or 18 stamps per page, we should look for the highest multiple of both 12 and 18 that is less than 500.
Step 1: Find the multiples of 12 and 18
- Multiples of 12: 12, 24, 36, 48, 60, 72, 84, 96, 108, 120, 132, 144, 156, 168, 180, 192, 204, 216, 228, 240, 252, 264, 276, 288, 300, 312, 324, 336, 348, 360, 372, 384, 396, 408, 420, 432, 444, 456, 468, 480, 492
- Multiples of 18: 18, 36, 54, 72, 90, 108, 126, 144, 162, 180, 198, 216, 234, 252, 270, 288, 306, 324, 342, 360, 378, 396, 414, 432, 450, 468, 486
Step 2: Find the highest common multiple
From the lists above, we can see that the highest common multiple of 12 and 18 is 36.
Step 3: Find the highest multiple of 36 that is less than 500
To find the highest multiple of 36 that is less than 500, we can divide 500 by 36 and take the integer value:
500 ÷ 36 = 13.888...
The integer value is 13.
Step 4: Calculate the greatest number of stamps
To find the greatest number of stamps, we multiply the highest common multiple by the integer value:
36 × 13 = 468
Therefore, the greatest number of stamps that can be arranged in an album with either 12 or 18 stamps per page is 468 stamps.