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Kaylis [27]
3 years ago
9

Xian and his cousin Kal both collect stamps. Xian has 52 stamps, and Kal has 68 stamps. The boys recently

Mathematics
1 answer:
s344n2d4d5 [400]3 years ago
7 0

Answer:

In 4 months, they will both have 132 stamps.

Step-by-step explanation:

Let x = # of months

52 + 20x = 68 + 16x

4x = 16

x = 4

Plug x value into both expressions and see if it checks out

52 + 20(4) = 68 + 16(4)

52 + 80 = 68 + 64

132 = 132

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First, note that 343=7^3. Then use the formula for the sum of perfect cubes:

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