Question

The average height of 30 students is 1m 50cm. 6 new students increase the average height to 1m 55cm. Determine the average height of 6 new students.

Answer 1

Answer: 180

Step-by-step explanation:

Average height of 30 students is 150 cm

So total height of 30 students is 30x150=4500

Similarly total height of 36 students is 36x155=5580

So total height of 6 new students=5580-4500=1080

Average of these six students = 1080/6

=180