<span>20 hundreds=2000
</span><span>20 hundredths=0.2</span>
Answer:
The new mean is 77cm
Step-by-step explanation:
If the mean height of the 30 children in a room is 76 cm, then the sum of their ages is

If James with height 107cm joins them, then the total number of children now becomes 30+1=31 and the total height becomes: 2280cm+107cm=2387cm
The new mean now becomes:

Answer:
26.25
Step-by-step explanation:
52.50 divided by 2= 26.25
The answer is not any of the letters. I got x=15/2 or x=7.5. You may have made an error in your question.
The correct answer to this question is B.