Jawab:

2/5 meters.

Penjelasan dengan langkah-langkah:

Let x be the length of Stick B. Then, according to the problem:

Stick A is 3/8 m longer than Stick B, so its length is x + 3/8.

Stick C is 1/10 m shorter than Stick B, so its length is x - 1/10.

We also know that Stick A is 9/10 m long, so we can set up an equation:

x + 3/8 = 9/10

To solve for x, we can simplify the equation:

x = 9/10 - 3/8

x = 36/40 - 15/40

x = 21/40

Now that we know the length of Stick B, we can find the length of Stick C:

x - 1/10 = 21/40 - 1/10

x - 1/10 = 16/40

x - 1/10 = 2/5

Therefore, the length of Stick C is 2/5 meters.