Step-by-step explanation:
I ᴛʜɪɴᴋ ᴛʜɪs ǫᴜᴇsᴛɪᴏɴ ɪs ᴡʀᴏɴɢ. ᴄʜᴇᴄᴋ ʏᴏᴜʀ ǫᴜᴇsᴛɪᴏɴ ᴏɴᴄᴇ ᴘʟᴇᴀsᴇ.
this is what would make sence for me
the frist one was confusing
Answer: The average age is 7.1 years.
This problem is an example of when we need to take a weighted average. We simply can't just find the average of 5 and 8, because there are different children of each each.
To start, lets multiply the total number of children by their individual ages.
6 x 5 = 30 years
14 x 8 = 112 years
There are 142 years among the 20 years, so divide 142 by 20. This gives us an average age of 7.1 years.
Let the unknown be n, then:
n × 3 = 8 × 2
n × 3 = 16
n = 16 ÷ 3
n = 5.333
Answer:
B
Step-by-step explanation:
I think
