Answer:
Step-by-step explanation:
The A
<span>2 3/4 = 2.75
so
</span>2 3/4 = 2.75%
im pretty sure it's the first option.
The answer to the question
Answer:
40
Step-by-step explanation:
5 people in the room have 5*40 = 200 years altogether
a new person is X years old.
Now 6 people have (200 + x) years altogether.
Mean age of 6 people is (200+x)/6. and it is also = 40.
So,
(200+x)/6 = 40
200 + x = 240
x = 40
