The mean score of mathematics test for 14 students is 6.5. If three more other students do the test the

Soal

The mean score of mathematics test for 14 students is 6.5. If three more other students do the test the mean score will become 6.2. Find the mean score the three other students.

The mean score of mathematics test for 14 students is 6.5. If three more other students do the test the mean score will become 6.2. Let's denote the mean score of the three other students as x.

We can use the formula for the weighted mean to solve for x:

$$\frac{(14 \times 6.5) + (3 \times x)}{14 + 3} = 6.2$$

Simplifying and solving for x, we get:

$$x = \boxed{5.0}$$

Therefore, the mean score of the three other students is 5.0.