The average height of 3boys and 2girls is1.5metres the average height of the 2 of the boys is 1.6 find the height of the 3rd boy

Answer 1

Let's assume the height of the 3rd boy as X.

The total height of the 3 boys and 2 girls is 5 * 1.5 = 7.5 meters.

The total height of the 2 boys is 2 * 1.6 = 3.2 meters.

The height of the 3rd boy is 7.5 - 3.2 = 4.3 meters.

Therefore, the height of the 3rd boy is 4.3 meters.